diff --git a/src/core/service.c b/src/core/service.c
index d2b8c18af1..7809c6a511 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -4313,29 +4313,30 @@ static bool service_notify_message_authorized(Service *s, pid_t pid, FDSet *fds)
         NotifyAccess notify_access = service_get_notify_access(s);
 
         if (notify_access == NOTIFY_NONE) {
+                /* Warn level only if no notifications are expected */
                 log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled.", pid);
                 return false;
         }
 
         if (notify_access == NOTIFY_MAIN && pid != s->main_pid.pid) {
                 if (pidref_is_set(&s->main_pid))
-                        log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid.pid);
+                        log_unit_debug(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid.pid);
                 else
-                        log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID which is currently not known", pid);
+                        log_unit_debug(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID which is currently not known", pid);
 
                 return false;
         }
 
         if (notify_access == NOTIFY_EXEC && pid != s->main_pid.pid && pid != s->control_pid.pid) {
                 if (pidref_is_set(&s->main_pid) && pidref_is_set(&s->control_pid))
-                        log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT" and control PID "PID_FMT,
+                        log_unit_debug(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT" and control PID "PID_FMT,
                                          pid, s->main_pid.pid, s->control_pid.pid);
                 else if (pidref_is_set(&s->main_pid))
-                        log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid.pid);
+                        log_unit_debug(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid.pid);
                 else if (pidref_is_set(&s->control_pid))
-                        log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for control PID "PID_FMT, pid, s->control_pid.pid);
+                        log_unit_debug(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for control PID "PID_FMT, pid, s->control_pid.pid);
                 else
-                        log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID and control PID which are currently not known", pid);
+                        log_unit_debug(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID and control PID which are currently not known", pid);
 
                 return false;
         }