diff --git a/wand/compare.c b/wand/compare.c
index 23040fc..623f766 100644
--- a/wand/compare.c
+++ b/wand/compare.c
@@ -660,6 +660,7 @@
             if (i == (ssize_t) argc)
               ThrowCompareException(OptionError,"MissingArgument",option);
             value=strtod(argv[i],&p);
+            (void) value;
             if ((p == argv[i]) && (LocaleCompare("unlimited",argv[i]) != 0))
               ThrowCompareInvalidArgumentException(option,argv[i]);
             break;