diff --git a/packages/transpiler/src/keywords.ts b/packages/transpiler/src/keywords.ts
index bae8ce1af..75071a3d7 100644
--- a/packages/transpiler/src/keywords.ts
+++ b/packages/transpiler/src/keywords.ts
@@ -34,6 +34,9 @@ export class Keywords {
   }
 
   public handle(reg: abaplint.IRegistry) {
+    if (this.keywords.length === 0) {
+      return;
+    }
     reg.parse();
 
     for (const o of reg.getObjects()) {
diff --git a/test/keywords.ts b/test/keywords.ts
index ac91c55a0..882c667d4 100644
--- a/test/keywords.ts
+++ b/test/keywords.ts
@@ -67,6 +67,29 @@ START-OF-SELECTION.
     expect(abap.console.get()).to.equal("2");
   });
 
-// TODO: class attribute
+  it("class attribute", async () => {
+    const code = `
+CLASS lcl DEFINITION.
+  PUBLIC SECTION.
+    METHODS constructor.
+  PRIVATE SECTION.
+    DATA class TYPE i.
+ENDCLASS.
+
+CLASS lcl IMPLEMENTATION.
+  METHOD constructor.
+    WRITE class.
+  ENDMETHOD.
+ENDCLASS.
+
+START-OF-SELECTION.
+  DATA lo TYPE REF TO lcl.
+  CREATE OBJECT lo.`;
+
+    const js = await run(code);
+    const f = new AsyncFunction("abap", js);
+    await f(abap);
+    expect(abap.console.get()).to.equal("0");
+  });
 
 });
\ No newline at end of file