diff --git a/packages/core/__tests__/core.test.ts b/packages/core/__tests__/core.test.ts
index 2760c123bf..ea3445cb22 100644
--- a/packages/core/__tests__/core.test.ts
+++ b/packages/core/__tests__/core.test.ts
@@ -324,9 +324,9 @@ describe('@actions/core', () => {
     })
     expect(commandProperties.title).toBe('A title')
     expect(commandProperties.col).toBe(1)
-    expect(commandProperties.end_column).toBe(2)
+    expect(commandProperties.endColumn).toBe(2)
     expect(commandProperties.line).toBe(5)
-    expect(commandProperties.end_line).toBe(5)
+    expect(commandProperties.endLine).toBe(5)
 
     expect(commandProperties.startColumn).toBeUndefined()
     expect(commandProperties.endColumn).toBeUndefined()