diff --git a/tests/scripts/task_cpp_unittest.sh b/tests/scripts/task_cpp_unittest.sh
index 712e54a1a2408..25a6bf06aec73 100755
--- a/tests/scripts/task_cpp_unittest.sh
+++ b/tests/scripts/task_cpp_unittest.sh
@@ -30,7 +30,8 @@ export OMP_NUM_THREADS=1
 # Remove existing testcases
 rm -f build/*_test
 
-make crttest cpptest -j3
+make cpptest -j8
+make crttest -j8
 for test in build/*_test; do
     ./$test
 done