--- event.c.orig	2011-08-04 02:54:26.000000000 +0400
+++ event.c	2011-10-12 01:35:09.000000000 +0400
@@ -107,7 +107,7 @@
 	}
 
 	/* Compile the regular expression.  This is based on run-parts(8). */
-	rc = regcomp(&preg, "^[a-zA-Z0-9_-]+$", RULE_REGEX_FLAGS);
+	rc = regcomp(&preg, "^[a-z0-9._-]+$", RULE_REGEX_FLAGS);
 	if (rc) {
 		acpid_log(LOG_ERR, "regcomp(): %d", rc);
 		unlock_rules();