diff --git a/src/basic/cgroup-util.h b/src/basic/cgroup-util.h
index 9e69bf6c98..05211b065c 100644
--- a/src/basic/cgroup-util.h
+++ b/src/basic/cgroup-util.h
@@ -206,9 +206,9 @@ int cg_read_subgroup(DIR *d, char **ret);
 
 typedef int (*cg_kill_log_func_t)(const PidRef *pid, int sig, void *userdata);
 
-int cg_kill(const char *path, int sig, CGroupFlags flags, Set *killed_pids, cg_kill_log_func_t kill_log, void *userdata);
+int cg_kill(const char *path, int sig, CGroupFlags flags, Set *killed_pids, cg_kill_log_func_t log_kill, void *userdata);
 int cg_kill_kernel_sigkill(const char *path);
-int cg_kill_recursive(const char *path, int sig, CGroupFlags flags, Set *killed_pids, cg_kill_log_func_t kill_log, void *userdata);
+int cg_kill_recursive(const char *path, int sig, CGroupFlags flags, Set *killed_pids, cg_kill_log_func_t log_kill, void *userdata);
 
 int cg_split_spec(const char *spec, char **ret_controller, char **ret_path);
 int cg_mangle_path(const char *path, char **ret);
diff --git a/src/core/unit.c b/src/core/unit.c
index 5cbd0fb76c..f7ff0061fa 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -4928,7 +4928,7 @@ int unit_kill_context(Unit *u, KillOperation k) {
                                                 SIGHUP,
                                                 CGROUP_IGNORE_SELF,
                                                 pid_set,
-                                                /* kill_log= */ NULL,
+                                                /* log_kill= */ NULL,
                                                 /* userdata= */ NULL);
                         }
                 }
diff --git a/src/udev/udev-manager.c b/src/udev/udev-manager.c
index 5601192745..aaaabe0d31 100644
--- a/src/udev/udev-manager.c
+++ b/src/udev/udev-manager.c
@@ -1321,7 +1321,7 @@ static int on_post(sd_event_source *s, void *userdata) {
 
         if (manager->cgroup && set_isempty(manager->synthesize_change_child_event_sources))
                 /* cleanup possible left-over processes in our cgroup */
-                (void) cg_kill(manager->cgroup, SIGKILL, CGROUP_IGNORE_SELF, /* killed_pids=*/ NULL, /* kill_log= */ NULL, /* userdata= */ NULL);
+                (void) cg_kill(manager->cgroup, SIGKILL, CGROUP_IGNORE_SELF, /* killed_pids=*/ NULL, /* log_kill= */ NULL, /* userdata= */ NULL);
 
         return 0;
 }