diff --git a/lib/types.nix b/lib/types.nix
index e9e45dc25c72..dd287734388a 100644
--- a/lib/types.nix
+++ b/lib/types.nix
@@ -270,7 +270,7 @@ rec {
       name = "attrs";
       description = "attribute set";
       check = isAttrs;
-      merge = loc: foldl' (res: def: mergeAttrs res def.value) {};
+      merge = loc: foldl' (res: def: res // def.value) {};
       emptyValue = { value = {}; };
     };