diff --git a/wand/stream.c b/wand/stream.c
index 7ee1739..2107ab7 100644
--- a/wand/stream.c
+++ b/wand/stream.c
@@ -547,7 +547,7 @@
             i++;
             if (i == (ssize_t) argc)
               ThrowStreamException(OptionError,"MissingArgument",option);
-            value=LocaleToDouble(argv[i],&p);
+            value=InterpretLocaleValue(argv[i],&p);
             (void) value;
             if ((p == argv[i]) && (LocaleCompare("unlimited",argv[i]) != 0))
               ThrowStreamInvalidArgumentException(option,argv[i]);