diff --git a/lib/services/resource.go b/lib/services/resource.go
index 71c8a7e7a1900..be41e16af02ec 100644
--- a/lib/services/resource.go
+++ b/lib/services/resource.go
@@ -125,6 +125,8 @@ func PreserveResourceID() MarshalOption {
 }
 
 // ParseShortcut parses resource shortcut
+// Generally, this should include the plural of a singular resource name or vice
+// versa.
 func ParseShortcut(in string) (string, error) {
 	if in == "" {
 		return "", trace.BadParameter("missing resource name")
@@ -156,7 +158,7 @@ func ParseShortcut(in string) (string, error) {
 		return types.KindReverseTunnel, nil
 	case types.KindTrustedCluster, "tc", "cluster", "clusters":
 		return types.KindTrustedCluster, nil
-	case types.KindClusterAuthPreference, "cluster_authentication_preferences", "cap":
+	case types.KindClusterAuthPreference, "cluster_authentication_preferences", "cluster_auth_preferences", "cap":
 		return types.KindClusterAuthPreference, nil
 	case types.KindUIConfig, "ui":
 		return types.KindUIConfig, nil