diff --git a/MagickCore/effect.c b/MagickCore/effect.c
index e2366b0..a1ef4e4 100644
--- a/MagickCore/effect.c
+++ b/MagickCore/effect.c
@@ -2468,7 +2468,7 @@
preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception);
if (preview_image != (Image *) NULL)
for (x=0; x < i; x++)
- (void) ContrastImage(preview_image,MagickTrue);
+ (void) ContrastImage(preview_image,MagickTrue,exception);
(void) FormatLocaleString(label,MaxTextExtent,"contrast (%.20g)",
(double) i+1);
break;
@@ -2479,7 +2479,7 @@
if (preview_image == (Image *) NULL)
break;
for (x=0; x < i; x++)
- (void) ContrastImage(preview_image,MagickFalse);
+ (void) ContrastImage(preview_image,MagickFalse,exception);
(void) FormatLocaleString(label,MaxTextExtent,"+contrast (%.20g)",
(double) i+1);
break;