diff --git a/src/engine.c b/src/engine.c
index 0103b77..c491522 100644
--- a/src/engine.c
+++ b/src/engine.c
@@ -268,15 +268,13 @@ void engine_setMode()
 	engine.autoPause = autoPause;
 
 	screen = SDL_CreateRGBSurface(0, DEFAULT_SCREEN_WIDTH, DEFAULT_SCREEN_HEIGHT, 32, 0xff0000, 0xff00, 0xff, 0xff000000);
-
-	if (!screen)
+	if (screen == NULL)
 	{
 		printf("Couldn't create %ix%ix32 surface: %s\n", DEFAULT_SCREEN_WIDTH, DEFAULT_SCREEN_HEIGHT, SDL_GetError());
 		exit(1);
 	}
 
 	window = SDL_CreateWindow("Project: Starfighter", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, screen->w, screen->h, 0);
-
 	if (window == NULL)
 	{
 		printf("Could not create window: %s\n", SDL_GetError());
@@ -287,8 +285,7 @@ void engine_setMode()
 	SDL_SetWindowFullscreen(window, engine.fullScreen ? FULLSCREEN : 0);
 
 	renderer = SDL_CreateRenderer(window, -1, 0);
-
-	if (!renderer)
+	if (renderer == NULL)
 	{
 		printf("Could not create renderer: %s\n", SDL_GetError());
 		exit(1);
@@ -297,8 +294,7 @@ void engine_setMode()
 	SDL_RenderSetLogicalSize(renderer, screen->w, screen->h);
 
 	renderer_texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, screen->w, screen->h);
-
-	if (!renderer_texture)
+	if (renderer_texture == NULL)
 	{
 		printf("Couldn't create %ix%ix32 texture: %s\n", screen->w, screen->h, SDL_GetError());
 		exit(1);