diff --git a/mod.dang b/mod.dang
index 3df12f9..6d64737 100644
--- a/mod.dang
+++ b/mod.dang
@@ -39,7 +39,7 @@ type Mod {
     if (skipGenerate) {
       polyfill.workspace(ws).fork.changes
     } else {
-      polyfill.workspace(ws).moduleSource(path).generate.changes
+      polyfill.workspace(ws).moduleSource("/" + path).generate.changes
     }
   }
 }
diff --git a/python-sdk.dang b/python-sdk.dang
index f5dc7a5..50fc27a 100644
--- a/python-sdk.dang
+++ b/python-sdk.dang
@@ -216,7 +216,7 @@ type PythonSdk {
       .map { m => Mod(path: m.path, ws: ws, skipGenerateFilename: skipGenerateFilename) }
       .filter { mod => mod.skipGenerate == false }
       .reduce(pws.fork) { fork, mod =>
-        fork.merge(pws.moduleSource(mod.path).generate)
+        fork.merge(pws.moduleSource("/" + mod.path).generate)
       }
       .changes
   }