diff --git a/cinelerra-5.1/plugins/histogram/histogram.C b/cinelerra-5.1/plugins/histogram/histogram.C
index c78c3c7c..975e2eab 100644
--- a/cinelerra-5.1/plugins/histogram/histogram.C
+++ b/cinelerra-5.1/plugins/histogram/histogram.C
@@ -234,7 +234,7 @@ float HistogramMain::calculate_level(float input, int mode, int use_value)
 
 	if( !EQUIV(config.gamma[mode], 0) ) {
 		output = pow(output, 1.0 / config.gamma[mode]);
-		CLAMP(output, 0, 1.0);
+		//CLAMP(output, 0, 1.0);
 	}
 
 // Apply value curve
@@ -247,7 +247,7 @@ float HistogramMain::calculate_level(float input, int mode, int use_value)
 			config.low_output[mode];
 	}
 
-	CLAMP(output, 0, 1.0);
+	//CLAMP(output, 0, 1.0);
 	return output;
 }