diff --git a/projects/mtg/src/GameApp.cpp b/projects/mtg/src/GameApp.cpp
index e6b1661e1..925cd7a57 100644
--- a/projects/mtg/src/GameApp.cpp
+++ b/projects/mtg/src/GameApp.cpp
@@ -187,10 +187,10 @@ void GameApp::Create()
   JSoundSystem::GetInstance()->SetMusicVolume(options[Options::MUSICVOLUME].number);
 
   char buf[512];
-  sprintf(buf, "size of MTGCard : %lu\n" , sizeof(MTGCard));
+  sprintf(buf, "size of MTGCard : %llu\n", (long long unsigned int)sizeof(MTGCard));
   OutputDebugString(buf);
 
-  sprintf(buf, "size of CardPrimitive : %lu\n" , sizeof(CardPrimitive));
+  sprintf(buf, "size of CardPrimitive : %llu\n" , (long long unsigned int)sizeof(CardPrimitive));
   OutputDebugString(buf);
 }
 
diff --git a/projects/mtg/src/WResourceManager.cpp b/projects/mtg/src/WResourceManager.cpp
index 7826fe4d7..f5943ef18 100644
--- a/projects/mtg/src/WResourceManager.cpp
+++ b/projects/mtg/src/WResourceManager.cpp
@@ -57,8 +57,8 @@ void WResourceManager::DebugRender(){
   if(textureWCache.totalSize > textureWCache.cacheSize)
     man = textureWCache.totalSize - textureWCache.cacheSize;
 
-  sprintf(buf,"Textures %u+%lu (of %u) items (%u misses), Pixels: %lu (of %lu) + %lu",
-    textureWCache.cacheItems, textureWCache.managed.size(),textureWCache.maxCached,
+  sprintf(buf,"Textures %u+%llu (of %u) items (%u misses), Pixels: %lu (of %lu) + %lu",
+          textureWCache.cacheItems, (long long unsigned int)textureWCache.managed.size(),textureWCache.maxCached,
     misses,textureWCache.cacheSize,textureWCache.maxCacheSize,man);
   font->DrawString(buf, 10,5);