diff --git a/lldb/test/API/commands/expression/top-level/TestTopLevelExprs.py b/lldb/test/API/commands/expression/top-level/TestTopLevelExprs.py
index 92707eabec0cea..220332759ec4d3 100644
--- a/lldb/test/API/commands/expression/top-level/TestTopLevelExprs.py
+++ b/lldb/test/API/commands/expression/top-level/TestTopLevelExprs.py
@@ -92,6 +92,12 @@ def test_top_level_expressions(self):
             resultFromCode,
             resultFromTopLevel.GetValueAsUnsigned())
 
+        # Make sure the command line version works as well:
+        self.runCmd("expr --top-level -- int TopLevelFunction() { return 101; }")
+        resultFromTopLevel = self.frame().EvaluateExpression("TopLevelFunction()")
+        self.assertTrue(resultFromTopLevel.IsValid())
+        self.assertEqual(101, resultFromTopLevel.GetValueAsUnsigned(), "Command line version works.")
+
     def test_top_level_expression_without_target(self):
         self.expect("expr --top-level -- void func() {}", error=True,
                     substrs=["Top-level code needs to be inserted into a runnable target"])