diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1d3d1067e..f06020b3e 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -550,7 +550,7 @@ else( WIN32 )
 		sdl/sdlvideo.cpp
 		sdl/st_start.cpp )
 	if( APPLE )
-		set( SYSTEM_SOURCES ${SYSTEM_SOURCES} sdl/SDLMain.m sdl/iwadpicker_cocoa.mm )
+		set( SYSTEM_SOURCES ${SYSTEM_SOURCES} sdl/SDLMain.m sdl/iwadpicker_cocoa.mm sdl/i_system_cocoa.mm )
 	endif( APPLE )
 endif( WIN32 )
 
diff --git a/src/r_renderer.h b/src/r_renderer.h
index bc464c031..2ee63f606 100644
--- a/src/r_renderer.h
+++ b/src/r_renderer.h
@@ -19,7 +19,7 @@ struct FRenderer
 		Renderer = this;
 	}
 
-	~FRenderer()
+	virtual ~FRenderer()
 	{
 		Renderer = NULL;
 	}
diff --git a/src/sdl/i_system.cpp b/src/sdl/i_system.cpp
index 6c88a173b..f7ca515d3 100644
--- a/src/sdl/i_system.cpp
+++ b/src/sdl/i_system.cpp
@@ -39,7 +39,6 @@
 #endif
 
 #ifdef __APPLE__
-#include <CoreFoundation/CoreFoundation.h>
 #include <mach/mach_init.h>
 #include <mach/semaphore.h>
 #include <mach/task.h>
@@ -382,6 +381,10 @@ void I_Quit (void)
 extern FILE *Logfile;
 bool gameisdead;
 
+#ifdef __APPLE__
+void Mac_I_FatalError(const char* errortext);
+#endif
+
 void STACK_ARGS I_FatalError (const char *error, ...)
 {
     static bool alreadyThrown = false;
@@ -398,19 +401,7 @@ void STACK_ARGS I_FatalError (const char *error, ...)
 		va_end (argptr);
 
 #ifdef __APPLE__
-		// Close window or exit fullscreen and release mouse capture
-		SDL_Quit();
-		
-		const CFStringRef errorString = CFStringCreateWithCStringNoCopy( kCFAllocatorDefault, 
-			errortext, kCFStringEncodingASCII, kCFAllocatorNull );
-		if ( NULL != errorString )
-		{
-			CFOptionFlags dummy;
-		
-			CFUserNotificationDisplayAlert( 0, kCFUserNotificationStopAlertLevel, NULL, NULL, NULL, 
-				CFSTR( "Error" ), errorString, CFSTR( "Exit" ), NULL, NULL, &dummy );
-			CFRelease( errorString );
-		}
+		Mac_I_FatalError(errortext);
 #endif // __APPLE__		
 		
 		// Record error to log (if logging)
diff --git a/src/sdl/i_system_cocoa.mm b/src/sdl/i_system_cocoa.mm
new file mode 100644
index 000000000..50faf94a8
--- /dev/null
+++ b/src/sdl/i_system_cocoa.mm
@@ -0,0 +1,19 @@
+#include <CoreFoundation/CoreFoundation.h>
+#include "SDL.h"
+
+void Mac_I_FatalError(const char* errortext)
+{
+	// Close window or exit fullscreen and release mouse capture
+	SDL_Quit();
+	
+	const CFStringRef errorString = CFStringCreateWithCStringNoCopy( kCFAllocatorDefault, 
+		errortext, kCFStringEncodingASCII, kCFAllocatorNull );
+	if ( NULL != errorString )
+	{
+		CFOptionFlags dummy;
+	
+		CFUserNotificationDisplayAlert( 0, kCFUserNotificationStopAlertLevel, NULL, NULL, NULL, 
+			CFSTR( "Fatal Error" ), errorString, CFSTR( "Exit" ), NULL, NULL, &dummy );
+		CFRelease( errorString );
+	}
+}