1 files changed, 1 insertions, 1 deletions
diff --git a/cmdline/unit.h b/cmdline/unit.h
index f73981fbd3..b049d62a82 100644
--- a/cmdline/unit.h
+++ b/cmdline/unit.h
@@ -27,7 +27,7 @@ struct Unit {
   Unit() {}
   Unit(const Unit&) = default;
   ~Unit() {}
-  bool operator==(Unit) const {
+  bool operator==(const Unit&) const {
     return true;
   }
 };