diff --git a/cl_dll/ammo.cpp b/cl_dll/ammo.cpp
index 281a975c6..4731e4811 100644
--- a/cl_dll/ammo.cpp
+++ b/cl_dll/ammo.cpp
@@ -219,7 +219,7 @@ int WeaponsResource::CountAmmo( int iId )
 int WeaponsResource::HasAmmo( WEAPON *p )
 {
 	if( !p )
-		return FALSE;
+		return 0;
 
 	// weapons with no max ammo can always be selected
 	return ( p->iAmmoType == -1 ) || p->iClip > 0 || CountAmmo( p->iAmmoType ) 
@@ -581,7 +581,7 @@ HSPRITE* WeaponsResource::GetAmmoPicFromWeapon( int iAmmoId, wrect_t& rect )
 // Menu Selection Code
 void WeaponsResource::SelectSlot( int iSlot, int fAdvance, int iDirection )
 {
-	if( gHUD.m_Menu.m_fMenuDisplayed && ( fAdvance  == FALSE ) && ( iDirection == 1 ) )	
+	if( gHUD.m_Menu.m_fMenuDisplayed && ( fAdvance == 0 ) && ( iDirection == 1 ) )
 	{
 		// menu is overriding slot use commands
 		gHUD.m_Menu.SelectMenuItem( iSlot + 1 );  // slots are one off the key numbers
@@ -734,7 +734,7 @@ int CHudAmmo::MsgFunc_HideWeapon( const char *pszName, int iSize, void *pbuf )
 int CHudAmmo::MsgFunc_CurWeapon( const char *pszName, int iSize, void *pbuf )
 {
 	wrect_t nullrc = {0,};
-	int fOnTarget = FALSE;
+	bool fOnTarget = false;
 
 	BEGIN_READ( pbuf, iSize );
 
@@ -745,7 +745,7 @@ int CHudAmmo::MsgFunc_CurWeapon( const char *pszName, int iSize, void *pbuf )
 	// detect if we're also on target
 	if( iState > 1 )
 	{
-		fOnTarget = TRUE;
+		fOnTarget = true;
 	}
 
 	if( iId < 1 )
@@ -761,11 +761,11 @@ int CHudAmmo::MsgFunc_CurWeapon( const char *pszName, int iSize, void *pbuf )
 		// Is player dead???
 		if( ( iId == -1 ) && ( iClip == -1 ) )
 		{
-			gHUD.m_fPlayerDead = TRUE;
+			gHUD.m_fPlayerDead = true;
 			gpActiveSel = NULL;
 			return 1;
 		}
-		gHUD.m_fPlayerDead = FALSE;
+		gHUD.m_fPlayerDead = false;
 	}
 
 	WEAPON *pWeapon = gWR.GetWeapon( iId );
@@ -875,7 +875,7 @@ void CHudAmmo::SlotInput( int iSlot )
 	if( gViewPort && gViewPort->SlotInput( iSlot ) )
 		return;
 #endif
-	gWR.SelectSlot(iSlot, FALSE, 1);
+	gWR.SelectSlot(iSlot, 0, 1);
 }
 
 void CHudAmmo::UserCmd_Slot1( void )
diff --git a/cl_dll/cl_util.h b/cl_dll/cl_util.h
index cf53975d2..294fbfd49 100644
--- a/cl_dll/cl_util.h
+++ b/cl_dll/cl_util.h
@@ -22,11 +22,6 @@
 #include "cvardef.h"
 #include "color_utils.h"
 
-#if !defined(TRUE)
-#define TRUE 1
-#define FALSE 0
-#endif
-
 // Macros to hook function calls into the HUD object
 
 #define HOOK_MESSAGE(x) gEngfuncs.pfnHookUserMsg( #x, __MsgFunc_##x );
diff --git a/cl_dll/death.cpp b/cl_dll/death.cpp
index 94871ba83..ad745d7b9 100644
--- a/cl_dll/death.cpp
+++ b/cl_dll/death.cpp
@@ -30,9 +30,9 @@ struct DeathNoticeItem {
 	char szKiller[MAX_PLAYER_NAME_LENGTH * 2];
 	char szVictim[MAX_PLAYER_NAME_LENGTH * 2];
 	int iId;	// the index number of the associated sprite
-	int iSuicide;
-	int iTeamKill;
-	int iNonPlayerKill;
+	bool iSuicide;
+	bool iTeamKill;
+	bool iNonPlayerKill;
 	float flDisplayTime;
 	float *KillerColor;
 	float *VictimColor;
@@ -155,7 +155,7 @@ int CHudDeathNotice::Draw( float flTime )
 			x += ( gHUD.GetSpriteRect(id).right - gHUD.GetSpriteRect(id).left );
 
 			// Draw victims name (if it was a player that was killed)
-			if( rgDeathNoticeList[i].iNonPlayerKill == FALSE )
+			if( !rgDeathNoticeList[i].iNonPlayerKill )
 			{
 				if( rgDeathNoticeList[i].VictimColor )
 					DrawSetTextColor( rgDeathNoticeList[i].VictimColor[0], rgDeathNoticeList[i].VictimColor[1], rgDeathNoticeList[i].VictimColor[2] );
@@ -236,7 +236,7 @@ int CHudDeathNotice::MsgFunc_DeathMsg( const char *pszName, int iSize, void *pbu
 	// Is it a non-player object kill?
 	if( ( (signed char)victim ) == -1 )
 	{
-		rgDeathNoticeList[i].iNonPlayerKill = TRUE;
+		rgDeathNoticeList[i].iNonPlayerKill = true;
 
 		// Store the object's name in the Victim slot (skip the d_ bit)
 		strcpy( rgDeathNoticeList[i].szVictim, killedwith + 2 );
@@ -244,10 +244,10 @@ int CHudDeathNotice::MsgFunc_DeathMsg( const char *pszName, int iSize, void *pbu
 	else
 	{
 		if( killer == victim || killer == 0 )
-			rgDeathNoticeList[i].iSuicide = TRUE;
+			rgDeathNoticeList[i].iSuicide = true;
 
 		if( !strcmp( killedwith, "d_teammate" ) )
-			rgDeathNoticeList[i].iTeamKill = TRUE;
+			rgDeathNoticeList[i].iTeamKill = true;
 	}
 
 	// Find the sprite in the list
diff --git a/cl_dll/hud.h b/cl_dll/hud.h
index cf7853fef..ccaadaf20 100644
--- a/cl_dll/hud.h
+++ b/cl_dll/hud.h
@@ -367,7 +367,7 @@ class CHudScoreboard : public CHudBase
 	int m_iLastKilledBy;
 	int m_fLastKillTime;
 	int m_iPlayerNum;
-	int m_iShowscoresHeld;
+	bool m_iShowscoresHeld;
 };
 
 //
@@ -419,10 +419,10 @@ struct team_info_t
 	short deaths;
 	short ping;
 	short packetloss;
-	short ownteam;
+	bool ownteam;
 	short players;
-	int already_drawn;
-	int scores_overriden;
+	bool already_drawn;
+	bool scores_overriden;
 	int teamnumber;
 };
 
@@ -1067,7 +1067,7 @@ class CHud
 
 	int	m_iWeaponBits;
 	int m_iItemBits;
-	int	m_fPlayerDead;
+	bool m_fPlayerDead;
 	int m_iIntermission;
 
 	// sprite indexes
diff --git a/cl_dll/hud_spectator.cpp b/cl_dll/hud_spectator.cpp
index 5a74bb093..cb865a4df 100644
--- a/cl_dll/hud_spectator.cpp
+++ b/cl_dll/hud_spectator.cpp
@@ -1357,7 +1357,7 @@ void CHudSpectator::DrawOverviewLayer()
 	float screenaspect, xs, ys, xStep, yStep, x, y, z;
 	int ix, iy, i, xTiles, yTiles, frame;
 
-	qboolean	 hasMapImage = m_MapSprite ? TRUE : FALSE;
+	bool	 hasMapImage = m_MapSprite ? true : false;
 	model_t		*dummySprite = (struct model_s *)gEngfuncs.GetSpritePointer( m_hsprUnkownMap );
 
 	if( hasMapImage )
diff --git a/cl_dll/menu.cpp b/cl_dll/menu.cpp
index b4e126d21..a90164d84 100644
--- a/cl_dll/menu.cpp
+++ b/cl_dll/menu.cpp
@@ -55,7 +55,7 @@ void CHudMenu::InitHUDData( void )
 void CHudMenu::Reset( void )
 {
 	g_szPrelocalisedMenuString[0] = 0;
-	m_fWaitingForMore = FALSE;
+	m_fWaitingForMore = false;
 }
 
 int CHudMenu::VidInit( void )
@@ -195,7 +195,7 @@ int CHudMenu::MsgFunc_ShowMenu( const char *pszName, int iSize, void *pbuf )
 		m_iFlags &= ~HUD_ACTIVE;
 	}
 
-	m_fWaitingForMore = NeedMore;
+	m_fWaitingForMore = NeedMore != 0;
 
 	return 1;
 }
diff --git a/cl_dll/saytext.cpp b/cl_dll/saytext.cpp
index c34a556bd..851f6fcdd 100644
--- a/cl_dll/saytext.cpp
+++ b/cl_dll/saytext.cpp
@@ -97,7 +97,7 @@ int CHudSayText::Draw( float flTime )
 	int y = Y_START;
 
 #if USE_VGUI
-	if( ( gViewPort && gViewPort->AllowedToPrintText() == FALSE ) )
+	if( ( gViewPort && !gViewPort->AllowedToPrintText() ) )
 		return 1;
 #endif
 	if ( !m_HUD_saytext->value )
@@ -165,7 +165,7 @@ int CHudSayText::MsgFunc_SayText( const char *pszName, int iSize, void *pbuf )
 void CHudSayText::SayTextPrint( const char *pszBuf, int iBufSize, int clientIndex )
 {
 #if USE_VGUI
-	if( gViewPort && gViewPort->AllowedToPrintText() == FALSE )
+	if( gViewPort && !gViewPort->AllowedToPrintText() )
 	{
 		// Print it straight to the console
 		ConsolePrint( pszBuf );
diff --git a/cl_dll/scoreboard.cpp b/cl_dll/scoreboard.cpp
index c9c1af86f..8c354cb5d 100644
--- a/cl_dll/scoreboard.cpp
+++ b/cl_dll/scoreboard.cpp
@@ -238,7 +238,7 @@ int CHudScoreboard::Draw( float fTime )
 			CHud::UtfText::DrawString( xpos, ypos, xpos+50, buf, r, g, b );
 		}
 
-		team_info->already_drawn = TRUE;  // set the already_drawn to be TRUE, so this team won't get drawn again
+		team_info->already_drawn = true;  // set the already_drawn to be TRUE, so this team won't get drawn again
 		list_slot++;
 
 		// draw all the players that belong to this team, indented slightly
@@ -465,7 +465,7 @@ int CHudScoreboard::MsgFunc_TeamScore( const char *pszName, int iSize, void *pbu
 		return 1;
 
 	// use this new score data instead of combined player scores
-	g_TeamInfo[i].scores_overriden = TRUE;
+	g_TeamInfo[i].scores_overriden = true;
 	g_TeamInfo[i].frags = READ_SHORT();
 	g_TeamInfo[i].deaths = READ_SHORT();
 
@@ -487,12 +487,12 @@ void CHudScoreboard::DeathMsg( int killer, int victim )
 
 void CHudScoreboard::UserCmd_ShowScores( void )
 {
-	m_iShowscoresHeld = TRUE;
+	m_iShowscoresHeld = true;
 }
 
 void CHudScoreboard::UserCmd_HideScores( void )
 {
-	m_iShowscoresHeld = FALSE;
+	m_iShowscoresHeld = false;
 }
 
 //-----------------------------------------------------------------------------
@@ -594,9 +594,9 @@ void CHudScoreboard::UpdateTeams()
 		g_TeamInfo[j].packetloss += g_PlayerInfoList[i].packetloss;
 
 		if( g_PlayerInfoList[i].thisplayer )
-			g_TeamInfo[j].ownteam = TRUE;
+			g_TeamInfo[j].ownteam = true;
 		else
-			g_TeamInfo[j].ownteam = FALSE;
+			g_TeamInfo[j].ownteam = false;
 
 		// Set the team's number (used for team colors)
 		g_TeamInfo[j].teamnumber = g_PlayerExtraInfo[i].teamnumber;
@@ -605,7 +605,7 @@ void CHudScoreboard::UpdateTeams()
 	// find team ping/packetloss averages
 	for( i = 1; i <= m_iNumTeams; i++ )
 	{
-		g_TeamInfo[i].already_drawn = FALSE;
+		g_TeamInfo[i].already_drawn = false;
 
 		if( g_TeamInfo[i].players > 0 )
 		{
diff --git a/cl_dll/statusbar.cpp b/cl_dll/statusbar.cpp
index 546941233..cec0a36ce 100644
--- a/cl_dll/statusbar.cpp
+++ b/cl_dll/statusbar.cpp
@@ -178,7 +178,7 @@ int CHudStatusBar::Draw( float fTime )
 			m_pflNameColors[i] = g_ColorYellow;
 			ParseStatusString( i );
 		}
-		m_bReparseString = FALSE;
+		m_bReparseString = false;
 	}
 
 	int Y_START = ScreenHeight - YRES( 32 + 4 );
@@ -237,7 +237,7 @@ int CHudStatusBar::MsgFunc_StatusText( const char *pszName, int iSize, void *pbu
 	else
 		m_iFlags |= HUD_ACTIVE;  // we have status text, so turn on the status bar
 
-	m_bReparseString = TRUE;
+	m_bReparseString = true;
 
 	return 1;
 }
@@ -256,7 +256,7 @@ int CHudStatusBar::MsgFunc_StatusValue( const char *pszName, int iSize, void *pb
 
 	m_iStatusValues[index] = READ_SHORT();
 
-	m_bReparseString = TRUE;
+	m_bReparseString = true;
 
 	return 1;
 }
diff --git a/cl_dll/text_message.cpp b/cl_dll/text_message.cpp
index 4518339d0..2bd29620f 100644
--- a/cl_dll/text_message.cpp
+++ b/cl_dll/text_message.cpp
@@ -181,7 +181,7 @@ int CHudTextMessage::MsgFunc_TextMsg( const char *pszName, int iSize, void *pbuf
 	char *psz = szBuf[5];
 
 #if USE_VGUI
-	if( gViewPort && gViewPort->AllowedToPrintText() == FALSE )
+	if( gViewPort && !gViewPort->AllowedToPrintText() )
 		return 1;
 #endif
 
diff --git a/cl_dll/vgui_ScorePanel.cpp b/cl_dll/vgui_ScorePanel.cpp
index b059b7fbb..cab8358fd 100644
--- a/cl_dll/vgui_ScorePanel.cpp
+++ b/cl_dll/vgui_ScorePanel.cpp
@@ -308,7 +308,7 @@ void ScorePanel::SortTeams()
 		// Put this team in the sorted list
 		m_iSortedRows[m_iRows] = best_team;
 		m_iIsATeam[m_iRows] = TEAM_YES;
-		g_TeamInfo[best_team].already_drawn = TRUE;  // set the already_drawn to be TRUE, so this team won't get sorted again
+		g_TeamInfo[best_team].already_drawn = true;  // set the already_drawn to be TRUE, so this team won't get sorted again
 		m_iRows++;
 
 		// Now sort all the players on this team
diff --git a/cl_dll/vgui_TeamFortressViewport.cpp b/cl_dll/vgui_TeamFortressViewport.cpp
index 157dacea1..cfc83757c 100644
--- a/cl_dll/vgui_TeamFortressViewport.cpp
+++ b/cl_dll/vgui_TeamFortressViewport.cpp
@@ -1584,10 +1584,10 @@ bool TeamFortressViewport::AllowedToPrintText( void )
 	{
 		int iId = m_pCurrentMenu->GetMenuID();
 		if( iId == MENU_TEAM || iId == MENU_CLASS || iId == MENU_INTRO || iId == MENU_CLASSHELP )
-			return FALSE;
+			return false;
 	}
 
-	return TRUE;
+	return true;
 }
 
 //======================================================================================
@@ -1801,7 +1801,7 @@ bool TeamFortressViewport::SlotInput( int iSlot )
 	if( m_pCurrentMenu )
 		return m_pCurrentMenu->SlotInput( iSlot );
 
-	return FALSE;
+	return false;
 }
 
 // Direct Key Input
diff --git a/cl_dll/voice_status.cpp b/cl_dll/voice_status.cpp
index e367fd644..464ea15d3 100644
--- a/cl_dll/voice_status.cpp
+++ b/cl_dll/voice_status.cpp
@@ -293,7 +293,7 @@ int CVoiceStatus::VidInit()
 	}
 
 	m_VoiceHeadModel = gEngfuncs.pfnSPR_Load("sprites/voiceicon.spr");
-	return TRUE;
+	return 1;
 }