diff --git a/tests/system-test/fulltest.sh b/tests/system-test/fulltest.sh
index 6850191de2167145e61f3557bc28726e96bed01d..f77be2b63324b016b04911000edaf79adeb36c30 100644
--- a/tests/system-test/fulltest.sh
+++ b/tests/system-test/fulltest.sh
@@ -76,6 +76,7 @@ python3 ./test.py -f 2-query/csum.py
 python3 ./test.py -f 2-query/mavg.py
 python3 ./test.py -f 2-query/diff.py
 python3 ./test.py -f 2-query/sample.py
+python3 ./test.py -f 2-query/function_diff.py
 
 python3 ./test.py -f 7-tmq/basic5.py
 python3 ./test.py -f 7-tmq/subscribeDb.py