diff --git a/src/core/hle/service/service.h b/src/core/hle/service/service.h
index cc8e91934d..ed47922891 100644
--- a/src/core/hle/service/service.h
+++ b/src/core/hle/service/service.h
@@ -191,7 +191,7 @@ private:
  */
 class Services final {
 public:
-    Services(std::shared_ptr<SM::ServiceManager>& sm, Core::System& system);
+    explicit Services(std::shared_ptr<SM::ServiceManager>& sm, Core::System& system);
     ~Services();
 
 private: