diff --git a/desmume/src/GPU.cpp b/desmume/src/GPU.cpp
index bb7c6aa1c..353fcadac 100644
--- a/desmume/src/GPU.cpp
+++ b/desmume/src/GPU.cpp
@@ -974,6 +974,7 @@ FORCEINLINE FASTCALL bool GPU::_master_setFinalBGColor(u16 &color, const u32 x)
 		case Blend: if(blend2[bg_under]) color = blend(color,T2ReadWord(currDst, x<<1)); break;
 		case Increase: color = currentFadeInColors[color]; break;
 		case Decrease: color = currentFadeOutColors[color]; break;
+		case None: break;
 	}
 	return true;
 }
@@ -1007,6 +1008,7 @@ static FORCEINLINE void _master_setFinalOBJColor(GPU *gpu, u8 *dst, u16 color, u
 
 		//only when blend color effect is selected, ordinarily opaque sprites are blended with the color effect params
 		case Blend: forceBlendingForNormal = true; break;
+		case None: break;
 		}