diff --git a/Shaders/MasterShader.metal b/Shaders/MasterShader.metal
index ee8dec9a..a0b63935 100644
--- a/Shaders/MasterShader.metal
+++ b/Shaders/MasterShader.metal
@@ -42,7 +42,7 @@ static inline float4 texture(texture2d<half> texture, float2 pos)
 #line 1
 {filter}
 
-#define BLEND_BIAS (1.0/3.0)
+#define BLEND_BIAS (2.0/5.0)
 
 enum frame_blending_mode {
     DISABLED,