diff --git a/MagickCore/compare.c b/MagickCore/compare.c
index edc0aaec66..686d399eff 100644
--- a/MagickCore/compare.c
+++ b/MagickCore/compare.c
@@ -1802,6 +1802,8 @@ static MagickBooleanType GetStructuralDisimilarityDistortion(const Image *image,
     distortion[i]=1.0-distortion[i];
   }
   distortion[CompositePixelChannel]=1.0-distortion[CompositePixelChannel];
+  if (fabs(distortion[CompositePixelChannel]) < MagickEpsilon)
+    distortion[CompositePixelChannel]=0.0;
   return(status);
 }