diff --git a/tests/system-test/2-query/sin.py b/tests/system-test/2-query/sin.py
index 1bc01dbb8a..138027d26c 100644
--- a/tests/system-test/2-query/sin.py
+++ b/tests/system-test/2-query/sin.py
@@ -494,7 +494,7 @@ class TDTestCase:
 
         tdLog.printNoPrefix("==========step4: sin basic query ============") 
 
-        self.basic_sqrt_function()
+        self.basic_sin_function()
 
         tdLog.printNoPrefix("==========step5: big number sin query ============")