diff --git a/src/GLSLCombiner.cpp b/src/GLSLCombiner.cpp
index 36050858..7cbc1c1b 100644
--- a/src/GLSLCombiner.cpp
+++ b/src/GLSLCombiner.cpp
@@ -719,7 +719,7 @@ void ShaderCombiner::updateGammaCorrection(bool _bForce)
 void ShaderCombiner::updateFogMode(bool _bForce)
 {
 	const u32 blender = (gDP.otherMode.l >> 16);
-	const int nFogBlendEnabled = config.generalEmulation.enableFog != 0 && gSP.fog.multiplier > 0 && (gDP.otherMode.c1_m1a == 3 || gDP.otherMode.c1_m2a == 3 || gDP.otherMode.c2_m1a == 3 || gDP.otherMode.c2_m2a == 3) ? 256 : 0;
+	const int nFogBlendEnabled = config.generalEmulation.enableFog != 0 && gSP.fog.multiplier >= 0 && (gDP.otherMode.c1_m1a == 3 || gDP.otherMode.c1_m2a == 3 || gDP.otherMode.c2_m1a == 3 || gDP.otherMode.c2_m2a == 3) ? 256 : 0;
 	int nFogUsage = ((gSP.geometryMode & G_FOG) != 0) ? 1 : 0;
 	int nSpecialBlendMode = 0;
 	switch (blender) {