diff --git a/src/drawing/sprite.c b/src/drawing/sprite.c
index ca3ab618ac..9f47d9b533 100644
--- a/src/drawing/sprite.c
+++ b/src/drawing/sprite.c
@@ -173,7 +173,7 @@ void gfx_bmp_sprite_to_buffer(uint8* palette_pointer, uint8* unknown_pointer, ui
 				}
 			}
 
-			source_pointer == next_source_pointer;
+			source_pointer = next_source_pointer;
 			dest_pointer = next_dest_pointer;
 		}
 		return;