diff --git a/wand/mogrify.c b/wand/mogrify.c
index a53349f..bbf80b7 100644
--- a/wand/mogrify.c
+++ b/wand/mogrify.c
@@ -7023,7 +7023,7 @@
           }
         if (LocaleCompare("precision",option+1) == 0)
           {
-            SetMagickPrecision(StringToInteger(argv[i+1]));
+            (void) SetMagickPrecision(StringToInteger(argv[i+1]));
             break;
           }
         if (LocaleCompare("preview",option+1) == 0)