diff --git a/src/video/null_v.cpp b/src/video/null_v.cpp
--- a/src/video/null_v.cpp
+++ b/src/video/null_v.cpp
@@ -7,13 +7,13 @@
 #include "../window.h"
 #include "null_v.h"
 
-static void* _null_video_mem = NULL;
+static Pixel *_null_video_mem = NULL;
 
 static const char* NullVideoStart(const char* const* parm)
 {
 	_screen.width = _screen.pitch = _cur_resolution[0];
 	_screen.height = _cur_resolution[1];
-	_null_video_mem = malloc(_cur_resolution[0] * _cur_resolution[1]);
+	_null_video_mem = (Pixel *)malloc(_cur_resolution[0] * _cur_resolution[1] * sizeof(Pixel));
 	return NULL;
 }
 
@@ -27,7 +27,7 @@ static void NullVideoMainLoop()
 
 	for (i = 0; i < 1000; i++) {
 		GameLoop();
-		_screen.dst_ptr = (Pixel*)_null_video_mem;
+		_screen.dst_ptr = _null_video_mem;
 		UpdateWindows();
 	}
 }