diff --git a/acorn.js b/acorn.js
index 3aa7f661c7..9fdcf0ca6c 100644
--- a/acorn.js
+++ b/acorn.js
@@ -3147,7 +3147,11 @@
     } else
     // export default ...;
     if (eat(_default)) {
-      node.declaration = parseExpression(true);
+      if (tokType === _function || tokType === _class) {
+        node.declaration = parseStatement();
+      } else {
+        node.declaration = parseExpression(true);
+      }
       node['default'] = true;
       node.specifiers = null;
       node.source = null;