diff --git a/src/shaders/shader.glsl b/src/shaders/shader.glsl
index a04946a..01794f2 100644
--- a/src/shaders/shader.glsl
+++ b/src/shaders/shader.glsl
@@ -254,7 +254,7 @@ uniform vec4 uFogParams;
 	#endif
 
 	vec4 pack(in float value) {
-		float v = fract(value * vec4(1.0, 255.0, 65025.0, 16581375.0));
+		float4 v = fract(value * vec4(1.0, 255.0, 65025.0, 16581375.0));
 		return v - v.yzww * vec4(1.0/255.0, 1.0/255.0, 1.0/255.0, 0.0);
 	}