diff --git a/GPU/Common/VertexShaderGenerator.cpp b/GPU/Common/VertexShaderGenerator.cpp
index 731ebc5ce5..9a82d11a9f 100644
--- a/GPU/Common/VertexShaderGenerator.cpp
+++ b/GPU/Common/VertexShaderGenerator.cpp
@@ -903,7 +903,7 @@ bool GenerateVertexShader(const VShaderID &id, char *buffer, const ShaderLanguag
 				if (specularIsZero) {
 					WRITE(p, "  %sv_color0 = clamp(lightSum0, 0.0, 1.0);\n", compat.vsOutPrefix);
 				} else {
-					WRITE(p, "  %sv_color0 = clamp(clamp(lightSum0, 0.0, 1.0) + vec4(lightSum1, 0.0), 0.0, 1.0);\n", compat.vsOutPrefix);
+					WRITE(p, "  %sv_color0 = clamp(vec4(lightSum0.rgb + lightSum1, lightSum0.a), 0.0, 1.0);\n", compat.vsOutPrefix);
 				}
 			}
 		} else {