diff --git a/tools/c_rehash.in b/tools/c_rehash.in
index 683b413df2..0fa320be58 100644
--- a/tools/c_rehash.in
+++ b/tools/c_rehash.in
@@ -75,7 +75,7 @@ sub hash_dir {
 		}
 	}
 	closedir DIR;
-	FILE: foreach $fname (grep {/\.(pem)|(crt)|(cer)|(crl)$/} @flist) {
+	FILE: foreach $fname (grep {/\.(pem|crt|cer|crl)$/} @flist) {
 		# Check to see if certificates and/or CRLs present.
 		my ($cert, $crl) = check_file($fname);
 		if(!$cert && !$crl) {