diff --git a/concourse/scripts/compile_gpdb.bash b/concourse/scripts/compile_gpdb.bash
index 867aa5932cdca381e089f7ded8fa2ec69c382574..fbb59266b63b9b582a7b9c29e3103cd6e49d71ab 100755
--- a/concourse/scripts/compile_gpdb.bash
+++ b/concourse/scripts/compile_gpdb.bash
@@ -91,7 +91,7 @@ function build_gppkg() {
 function unittest_check_gpdb() {
   pushd ${GPDB_SRC_PATH}
     source ${GREENPLUM_INSTALL_DIR}/greenplum_path.sh
-    make GPROOT=/usr/local -s -j4 unittest-check
+    make GPROOT=/usr/local -s unittest-check
   popd
 }
 
diff --git a/concourse/scripts/compile_gpdb_open_source_centos.bash b/concourse/scripts/compile_gpdb_open_source_centos.bash
index cf05e76085edc9082677ed63053b6ba841041693..1d024c98abc6662b1e23046c098ee68f7415c118 100755
--- a/concourse/scripts/compile_gpdb_open_source_centos.bash
+++ b/concourse/scripts/compile_gpdb_open_source_centos.bash
@@ -59,7 +59,7 @@ function build_gpdb() {
 
 function unittest_check_gpdb() {
   pushd gpdb_src/src/backend
-    make -s -j4 unittest-check
+    make -s unittest-check
   popd
 }
 
diff --git a/concourse/scripts/compile_gpdb_open_source_ubuntu.bash b/concourse/scripts/compile_gpdb_open_source_ubuntu.bash
index cfc1a9424afe0ced2c41350de70059f35be084a8..de02542b4d76ea5e24e2ba097e0fc777c756b076 100755
--- a/concourse/scripts/compile_gpdb_open_source_ubuntu.bash
+++ b/concourse/scripts/compile_gpdb_open_source_ubuntu.bash
@@ -37,7 +37,7 @@ function build_gpdb() {
 }
 
 function unittest_check_gpdb() {
-  make -C gpdb_src/src/backend -s -j4 unittest-check
+  make -C gpdb_src/src/backend -s unittest-check
 }
 
 function export_gpdb() {