diff --git a/lldb/test/API/commands/expression/diagnostics/TestExprDiagnostics.py b/lldb/test/API/commands/expression/diagnostics/TestExprDiagnostics.py
index 59e759352ce06..b476a807c6dc0 100644
--- a/lldb/test/API/commands/expression/diagnostics/TestExprDiagnostics.py
+++ b/lldb/test/API/commands/expression/diagnostics/TestExprDiagnostics.py
@@ -252,7 +252,7 @@ def check_error(diags):
         value = frame.EvaluateExpression("a+b")
         error = value.GetError()
         self.assertTrue(error.Fail())
-        self.assertEquals(error.GetType(), lldb.eErrorTypeExpression)
+        self.assertEqual(error.GetType(), lldb.eErrorTypeExpression)
         data = error.GetErrorData()
         version = data.GetValueForKey("version")
         self.assertEqual(version.GetIntegerValue(), 1)