diff --git a/acl.go b/acl.go
index 3607d9c..8cb433f 100644
--- a/acl.go
+++ b/acl.go
@@ -45,7 +45,7 @@ func ParseACL(def []string) (ACL, error) {
 		attr, exclAttr := []string{}, []string{}
 		for _, s := range splitNoEmpty(parts[4]) {
 			if s[0] == '!' {
-				exclAttr = append(exclAttr, s)
+				exclAttr = append(exclAttr, s[1:])
 			} else {
 				attr = append(attr, s)
 			}