diff --git a/velox/expression/tests/CastExprTest.cpp b/velox/expression/tests/CastExprTest.cpp
index 7b7e97ee976cd..6196c87876d58 100644
--- a/velox/expression/tests/CastExprTest.cpp
+++ b/velox/expression/tests/CastExprTest.cpp
@@ -590,7 +590,7 @@ TEST_F(CastExprTest, stringToTimestamp) {
   };
   testCast<std::string, Timestamp>("timestamp", input, expected);
 
-  setTimezone("GMT-8");
+  setTimezone("GMT+8");
   testCast<std::string, Timestamp>(
       "timestamp",
       {