diff --git a/Source/kwsys/SystemTools.cxx b/Source/kwsys/SystemTools.cxx
index 4815ffdbb..7cd404eb5 100644
--- a/Source/kwsys/SystemTools.cxx
+++ b/Source/kwsys/SystemTools.cxx
@@ -78,7 +78,7 @@
 #endif
 
 #define VTK_URL_PROTOCOL_REGEX "([a-zA-Z0-9]*)://(.*)"
-#define VTK_URL_REGEX "([a-zA-Z0-9]*)://(([A-Za-z]+)(:([^:@]+))?@)?([^:@/]+)(:([0-9]+))?/(.+)?"
+#define VTK_URL_REGEX "([a-zA-Z0-9]*)://(([A-Za-z0-9]+)(:([^:@]+))?@)?([^:@/]+)(:([0-9]+))?/(.+)?"
 
 #ifdef _MSC_VER
 #include <sys/utime.h>