diff --git a/tests/validate.c b/tests/validate.c
index 8263c5a..e8395a8 100644
--- a/tests/validate.c
+++ b/tests/validate.c
@@ -1374,6 +1374,8 @@
     Validate the ImageMagick image processing suite.
   */
   MagickCoreGenesis(*argv,MagickFalse);
+  (void) setlocale(LC_ALL,"");
+  (void) setlocale(LC_NUMERIC,"C");
   iterations=1;
   status=MagickFalse;
   type=AllValidate;