diff --git a/Source/Core/Common/Src/LinearDiskCache.h b/Source/Core/Common/Src/LinearDiskCache.h
index 4fc86b6f0c..d4d691eb79 100644
--- a/Source/Core/Common/Src/LinearDiskCache.h
+++ b/Source/Core/Common/Src/LinearDiskCache.h
@@ -26,7 +26,7 @@
 // shader cache for every revision, graphics-related or not, which is simply annoying.
 enum
 {
-	LINEAR_DISKCACHE_VER = 6504
+	LINEAR_DISKCACHE_VER = 6505
 };
 
 // On disk format:
diff --git a/Source/Core/VideoCommon/Src/PixelShaderGen.cpp b/Source/Core/VideoCommon/Src/PixelShaderGen.cpp
index 9f0d20ba53..57ec4cd2af 100644
--- a/Source/Core/VideoCommon/Src/PixelShaderGen.cpp
+++ b/Source/Core/VideoCommon/Src/PixelShaderGen.cpp
@@ -415,7 +415,7 @@ char *GeneratePixelLightShader(char *p, int index, const LitChannel& chan, const
 		else if (chan.attnfunc == 1) 
 		{ // specular
 			WRITE(p, "ldir = normalize("I_PLIGHTS".lights[%d].pos.xyz);\n",index);
-			WRITE(p, "attn = (dot(_norm0,ldir) > 0.0f) ? max(0.0f, dot(_norm0, "I_PLIGHTS".lights[%d].dir.xyz)) : 0.0f;\n", index);
+			WRITE(p, "attn = (dot(_norm0,ldir) >= 0.0f) ? max(0.0f, dot(_norm0, "I_PLIGHTS".lights[%d].dir.xyz)) : 0.0f;\n", index);
 			WRITE(p, "attn = max(0.0f, dot("I_PLIGHTS".lights[%d].cosatt.xyz, float3(1,attn,attn*attn))) / dot("I_PLIGHTS".lights[%d].distatt.xyz, float3(1,attn,attn*attn));\n", index, index);
 		}
 
diff --git a/Source/Core/VideoCommon/Src/VertexShaderGen.cpp b/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
index 9b231e229e..053de0be7a 100644
--- a/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
+++ b/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
@@ -571,7 +571,7 @@ char *GenerateLightShader(char *p, int index, const LitChannel& chan, const char
 		else if (chan.attnfunc == 1) 
 		{ // specular
 			WRITE(p, "ldir = normalize("I_LIGHTS".lights[%d].pos.xyz);\n",index);
-			WRITE(p, "attn = (dot(_norm0,ldir) > 0.0f) ? max(0.0f, dot(_norm0, "I_LIGHTS".lights[%d].dir.xyz)) : 0.0f;\n", index);
+			WRITE(p, "attn = (dot(_norm0,ldir) >= 0.0f) ? max(0.0f, dot(_norm0, "I_LIGHTS".lights[%d].dir.xyz)) : 0.0f;\n", index);
 			WRITE(p, "attn = max(0.0f, dot("I_LIGHTS".lights[%d].cosatt.xyz, float3(1,attn,attn*attn))) / dot("I_LIGHTS".lights[%d].distatt.xyz, float3(1,attn,attn*attn));\n", index, index);
 		}