diff --git a/shared/nm-glib-aux/nm-shared-utils.c b/shared/nm-glib-aux/nm-shared-utils.c
index c6f2598844..89ee66f7e0 100644
--- a/shared/nm-glib-aux/nm-shared-utils.c
+++ b/shared/nm-glib-aux/nm-shared-utils.c
@@ -2545,6 +2545,7 @@ nm_utils_hash_values_to_array (GHashTable *hash,
 		                   user_data);
 	}
 
+	NM_SET_OUT (out_len, len);
 	return arr;
 }