Index: Linux-PAM/modules/pam_group/pam_group.c
===================================================================
--- Linux-PAM/modules/pam_group/pam_group.c	(revision 295)
+++ Linux-PAM/modules/pam_group/pam_group.c	(working copy)
@@ -261,7 +261,8 @@
 
 	  default:
 	       if (isalpha(c) || c == '*' || isdigit(c) || c == '_'
-		    || c == '-' || c == '.' || c == '/') {
+		    || c == '-' || c == '.' || c == '/'
+		   || c == ':') {
 		    token = 1;
 	       } else if (token) {
 		    --to;
