diff --git a/src/twn_textures.c b/src/twn_textures.c
index 88e4f73..f4838ac 100644
--- a/src/twn_textures.c
+++ b/src/twn_textures.c
@@ -44,7 +44,7 @@ static int load_eof_callback(void *user) {
 static uint8_t *missing_texture_data;
 
 static SDL_Surface *gen_missing_texture_surface(void) {
-    Uint32 rmask, gmask, bmask, amask;
+    Uint32 rmask, gmask, bmask;
 
     #if SDL_BYTEORDER == SDL_BIG_ENDIAN
         rmask = 0xff000000;