diff --git a/MagickWand/compare.c b/MagickWand/compare.c
index f40a75bd52..b27bc6fd7a 100644
--- a/MagickWand/compare.c
+++ b/MagickWand/compare.c
@@ -1265,7 +1265,8 @@ WandExport MagickBooleanType CompareImagesCommand(ImageInfo *image_info,
       if (((subimage_search != MagickFalse) &&
            (image->columns == reconstruct_image->columns) &&
            (image->rows == reconstruct_image->rows)) &&
-          (fabs(maxima-minima) < MagickEpsilon))
+          ((fabs(maxima-minima) < MagickEpsilon) ||
+           (metric == PerceptualHashErrorMetric)))
         (void) ThrowMagickException(exception,GetMagickModule(),ImageWarning,
           "metric for subimage search is not sufficiently robust","(%s)",
           CommandOptionToMnemonic(MagickMetricOptions,(ssize_t) metric));