diff --git a/src/Makefile b/src/Makefile
index 67f1a2b..21ccda9 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2019-2023, yzrh <yzrh@noema.org>
+# Copyright (c) 2019-2022, yzrh <yzrh@noema.org>
 #
 # SPDX-License-Identifier: Apache-2.0
 #
@@ -18,7 +18,7 @@ obj = ${src:.c=.o}
 
 PREFIX = /usr/local
 
-CFLAGS = -O2 -pipe -flto -Wall -Wextra -Wno-unused-parameter
+CFLAGS = -O2 -pipe -flto -Wall -Wextra -Wno-unused-result -Wno-unused-parameter
 LDFLAGS = -Wl,-O2 -lpthread -lSDL2 -lSDL2_ttf
 
 .ifdef SOUND
diff --git a/src/snake-sdl.c b/src/snake-sdl.c
index 587979d..47cf07e 100644
--- a/src/snake-sdl.c
+++ b/src/snake-sdl.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2023, yzrh <yzrh@noema.org>
+ * Copyright (c) 2019-2022, yzrh <yzrh@noema.org>
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -108,22 +108,19 @@ static void*
 handler_rendering(void *args)
 {
 	const SDL_Color fg = {
-		.r = COLOUR_FOREGROUND_R,
-		.g = COLOUR_FOREGROUND_G,
-		.b = COLOUR_FOREGROUND_B,
-		.a = 255
+		COLOUR_FOREGROUND_R,
+		COLOUR_FOREGROUND_G,
+		COLOUR_FOREGROUND_B
 	};
 	const SDL_Color bg = {
-		.r = COLOUR_BACKGROUND_R,
-		.g = COLOUR_BACKGROUND_G,
-		.b = COLOUR_BACKGROUND_B,
-		.a = 255
+		COLOUR_BACKGROUND_R,
+		COLOUR_BACKGROUND_G,
+		COLOUR_BACKGROUND_B
 	};
 	const SDL_Color bg_s = {
-		.r = COLOUR_BACKGROUND_SHADE_R,
-		.g = COLOUR_BACKGROUND_SHADE_G,
-		.b = COLOUR_BACKGROUND_SHADE_B,
-		.a = 255
+		COLOUR_BACKGROUND_SHADE_R,
+		COLOUR_BACKGROUND_SHADE_G,
+		COLOUR_BACKGROUND_SHADE_B
 	};
 
 	char result_str[23];