diff --git a/desktop_version/src/GraphicsResources.cpp b/desktop_version/src/GraphicsResources.cpp
index acc1fa71..0b07cd3e 100644
--- a/desktop_version/src/GraphicsResources.cpp
+++ b/desktop_version/src/GraphicsResources.cpp
@@ -37,6 +37,11 @@ static SDL_Surface* LoadImage(const char *filename, bool noBlend = true, bool no
 	unsigned char *fileIn;
 	size_t length;
 	FILESYSTEM_loadAssetToMemory(filename, &fileIn, &length, false);
+	if (fileIn == NULL)
+	{
+		SDL_assert(0 && "Image file missing!");
+		return NULL;
+	}
 	if (noAlpha)
 	{
 		lodepng_decode24(&data, &width, &height, fileIn, length);
diff --git a/desktop_version/src/SoundSystem.cpp b/desktop_version/src/SoundSystem.cpp
index e5d0ead8..8c5f962c 100644
--- a/desktop_version/src/SoundSystem.cpp
+++ b/desktop_version/src/SoundSystem.cpp
@@ -38,6 +38,7 @@ SoundTrack::SoundTrack(const char* fileName)
 	if (mem == NULL)
 	{
 		fprintf(stderr, "Unable to load WAV file %s\n", fileName);
+		SDL_assert(0 && "WAV file missing!");
 		return;
 	}
 	SDL_RWops *fileIn = SDL_RWFromConstMem(mem, length);