diff --git a/corepkgs/module.nix b/corepkgs/module.nix
index 0abff42df..c8c4228d0 100644
--- a/corepkgs/module.nix
+++ b/corepkgs/module.nix
@@ -1,3 +1,5 @@
+with builtins;
+
 let
 
   showPos = pos:
diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index 0cde0d34f..511dd0de7 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -3507,8 +3507,7 @@ void EvalState::createBaseEnv()
         addPrimOp("__exec", 1, prim_exec);
     }
 
-    path = canonPath(settings.nixDataDir + "/nix/corepkgs/module.nix", true);
-    evalFile(path, v);
+    evalFile(canonPath(settings.nixDataDir + "/nix/corepkgs/module.nix", true), v);
     addConstant("module", v);
 
     /* Add a value containing the current Nix expression search path. */