diff --git a/rtengine/improcfun.cc b/rtengine/improcfun.cc
index 49a298c23..2d81c4d8b 100644
--- a/rtengine/improcfun.cc
+++ b/rtengine/improcfun.cc
@@ -2880,7 +2880,7 @@ void ImProcFunctions::chromiLuminanceCurve (int pW, LabImage* lold, LabImage* ln
 	// reference to the params structure has to be done outside of the parallelization to avoid CPU cache problem
 	bool highlight = params->hlrecovery.enabled; //Get the value if "highlight reconstruction" is activated
 	int chromaticity = params->labCurve.chromaticity;
-	bool bwToning = params->labCurve.chromaticity==-100  /*|| params->blackwhite.method=="Ch" */ || params->blackwhite.enabled || params->blackwhite.gammaRed!=0 || params->blackwhite.gammaGreen!=0 || params->blackwhite.gammaBlue!=0;
+	bool bwToning = params->labCurve.chromaticity==-100  /*|| params->blackwhite.method=="Ch" */ || params->blackwhite.enabled;
 	//if(bwToning) printf("OK bwto\n"); else printf("pas de bw\n");
 	bool LCredsk = params->labCurve.lcredsk;
 	bool ccut = ccutili;