diff --git a/GUIFramework/src/GUIFramework.cpp b/GUIFramework/src/GUIFramework.cpp
index 6be131be..e49eefce 100644
--- a/GUIFramework/src/GUIFramework.cpp
+++ b/GUIFramework/src/GUIFramework.cpp
@@ -633,8 +633,12 @@ namespace gui_framework
 
 	GUIFramework& GUIFramework::GUIFramework::get()
 	{
+		static mutex getInstanceMutex;
+
 		if (!instance)
 		{
+			unique_lock<mutex> lock(getInstanceMutex);
+
 			instance.reset(new GUIFramework());
 		}