diff --git a/configure b/configure
index b7635e4fec..0657b1a1b5 100755
--- a/configure
+++ b/configure
@@ -1180,7 +1180,7 @@ fi
 z_version=`cut -f3 -d. $source_path/VERSION`
 
 if test -z "$werror" ; then
-    if test "$z_version" = "50" -a \
+    if test -d "$source_path/.git" -a \
         "$linux" = "yes" ; then
         werror="yes"
     else