--- acpid-1.0.8.orig/event.c
+++ acpid-1.0.8/event.c
@@ -23,6 +23,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/wait.h>
+#include <libgen.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <stdio.h>
@@ -90,6 +91,8 @@
 	struct dirent *dirent;
 	char *file = NULL;
 	int nrules = 0;
+	char *basen = NULL;
+	regex_t preg;
 
 	lock_rules();
 
@@ -139,10 +142,19 @@
 			continue; /* skip non-regular files */
 		}
 
-		r = parse_file(file);
-		if (r) {
-			enlist_rule(&cmd_list, r);
-			nrules++;
+		/* check for run-parts style filename */
+		basen = basename(file);
+		if (regcomp(&preg, "^[a-zA-Z0-9_-]+$", RULE_REGEX_FLAGS) == 0){
+			if (regexec(&preg, basen, 0, NULL, 0) == 0){
+				r = parse_file(file);
+				if (r) {
+					enlist_rule(&cmd_list, r);
+					nrules++;
+				}
+			} else {
+				acpid_log(LOG_DEBUG, "ignoring conf file %s\n", file);
+			}
+
 		}
 		free(file);
 	}