diff --git a/src/libstore/remote-store.hh b/src/libstore/remote-store.hh
index 7f9d7d1f5..3686dc360 100644
--- a/src/libstore/remote-store.hh
+++ b/src/libstore/remote-store.hh
@@ -127,7 +127,7 @@ protected:
 
     ConnectionHandle getConnection();
 
-    friend class ConnectionHandle;
+    friend struct ConnectionHandle;
 
 private: