diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
index 386db061a06..d3f293c9f88 100644
--- a/src/core/load-fragment.c
+++ b/src/core/load-fragment.c
@@ -4000,7 +4000,7 @@ int config_parse_delegate(
 
                         cc = cgroup_controller_from_string(word);
                         if (cc < 0) {
-                                log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid controller name '%s', ignoring", word);
+                                log_syntax(unit, LOG_WARNING, filename, line, cc, "Invalid controller name '%s', ignoring", word);
                                 continue;
                         }