diff --git a/l4dtoolz.cpp b/l4dtoolz.cpp
index ba883d9..74a5e53 100644
--- a/l4dtoolz.cpp
+++ b/l4dtoolz.cpp
@@ -98,16 +98,16 @@ void l4dtoolz::ServerActivate(edict_t *, int, int){
 	if(slots>=0) write_signature(rules_max_ptr, max_player_new);
 }
 
-// Linux: float GetTickInterval(void *);
-float GetTickInterval(){
+// Linux: static float GetTickInterval(void *);
+static float GetTickInterval(){
 	static float tickinv = 1.0/tickrate;
 	return tickinv;
 }
 
 #ifdef WIN32
-int PreAuth(const void *, int, uint64 steamID){
+static int PreAuth(const void *, int, uint64 steamID){
 #else
-int PreAuth(void *, const void *, int, uint64 steamID){
+static int PreAuth(void *, const void *, int, uint64 steamID){
 #endif
 	if(!steamID){
 		Msg("[L4DToolZ] invalid steamID.\n");
@@ -190,8 +190,8 @@ void l4dtoolz::OnAntiSharing(IConVar *var, const char *pOldValue, float flOldVal
 }
 ConVar sv_anti_sharing("sv_anti_sharing", "0", 0, "No family sharing", true, 0, true, 1, l4dtoolz::OnAntiSharing);
 
-// Linux: void ReplyReservationRequest(void *, void *, void *);
-void ReplyReservationRequest(void *, void *){
+// Linux: static void ReplyReservationRequest(void *, void *, void *);
+static void ReplyReservationRequest(void *, void *){
 	return;
 }
 
diff --git a/l4dtoolz.h b/l4dtoolz.h
index 0172718..51f3171 100644
--- a/l4dtoolz.h
+++ b/l4dtoolz.h
@@ -4,8 +4,9 @@
 
 #include "signature.h"
 
+#define BINMSIZE	0x1400000 // 20M
 #define CHKPTR(P, V)	(P && !((uint)(P)&V))
-#define CMPPTR(P, V, C)	(CHKPTR(P, V) && !((uint)P>>24^(uint)C>>24))
+#define CMPPTR(P, V, C)	(CHKPTR(P, V) && abs((int)P-(int)C)<BINMSIZE)
 #define READCALL(P)	((P+5-1)+*(int *)(P))
 #define CHKVAL \
 	int new_value = ((ConVar *)var)->GetInt(); \
@@ -32,7 +33,7 @@ class l4dtoolz:public IServerPluginCallbacks{
 	virtual void Unload();
 	virtual void Pause(){ }
 	virtual void UnPause(){ }
-	virtual const char *GetPluginDescription(){ return "L4DToolZ v2.2.4p1, https://github.com/lakwsh/l4dtoolz"; }
+	virtual const char *GetPluginDescription(){ return "L4DToolZ v2.2.4p3, https://github.com/lakwsh/l4dtoolz"; }
 	virtual void LevelInit(char const *pMapName){ }
 	virtual void ServerActivate(edict_t *pEdictList, int edictCount, int clientMax);
 	virtual void GameFrame(bool simulating){ }