diff --git a/src/core/nm-core-utils.h b/src/core/nm-core-utils.h
index 7079ab2f25..2db087777e 100644
--- a/src/core/nm-core-utils.h
+++ b/src/core/nm-core-utils.h
@@ -154,7 +154,7 @@ nm_utils_ip_route_metric_penalize(guint32 metric, guint32 penalty)
 void nm_utils_kill_process_sync(pid_t       pid,
                                 guint64     start_time,
                                 int         sig,
-                                guint64     log_domain,
+                                NMLogDomain log_domain,
                                 const char *log_name,
                                 guint32     wait_before_kill_msec,
                                 guint32     sleep_duration_msec,
@@ -166,14 +166,14 @@ typedef void (*NMUtilsKillChildAsyncCb)(pid_t    pid,
                                         void    *user_data);
 void     nm_utils_kill_child_async(pid_t                   pid,
                                    int                     sig,
-                                   guint64                 log_domain,
+                                   NMLogDomain             log_domain,
                                    const char             *log_name,
                                    guint32                 wait_before_kill_msec,
                                    NMUtilsKillChildAsyncCb callback,
                                    void                   *user_data);
 gboolean nm_utils_kill_child_sync(pid_t       pid,
                                   int         sig,
-                                  guint64     log_domain,
+                                  NMLogDomain log_domain,
                                   const char *log_name,
                                   int        *child_status,
                                   guint32     wait_before_kill_msec,