max = comments_len + field.name.len
                 }
                 mut ft := f.no_cur_mod(f.table.type_to_str(field.typ))
-                if !ft.contains('C.') && !ft.contains('JS.') {
+                if !ft.contains('C.') && !ft.contains('JS.') && !ft.contains('fn (') {
                         ft = f.short_module(ft)
                 }
                 field_types << ft

new file mode 100644
+import v.ast
+
+struct Data {
+        a fn (string, voidptr) bool
+        b fn (ast.Stmt, voidptr) bool
+}

new file mode 100644
+import v.ast
+
+struct Data {
+        a fn (s string, f voidptr) bool
+        b fn (stmt ast.Stmt, f voidptr) bool
+}

                         }
                 }
                 .function {
+                        info := sym.info as FnType
                         if !table.is_fmt {
-                                info := sym.info as FnType
                                 res = table.fn_signature(info.func, type_only: true)
                         } else {
-                                res = table.shorten_user_defined_typenames(res, import_aliases)
+                                if res.starts_with('fn (') {
+                                        // fn foo ()
+                                        res = table.fn_signature(info.func, type_only: true)
+                                } else {
+                                        // FnFoo
+                                        res = table.shorten_user_defined_typenames(res, import_aliases)
+                                }
                         }
                 }
                 .map {