diff --git a/scripts/build-qt.sh b/scripts/build-qt.sh
index f3544924d8584a7b7da1314bc847e3bf8f2a7cad..7390f5480c9a639b0f9abd813887a634eebf96f6 100755
--- a/scripts/build-qt.sh
+++ b/scripts/build-qt.sh
@@ -4,4 +4,4 @@ mkdir -p build-qt
 cd build-qt
 cp /etc/qt/config.opt .
 ../qt5/configure -redo
-make module-qtwayland
+make module-qtwayland || make module-qtwayland -j1
diff --git a/scripts/build-qtbase-tests.sh b/scripts/build-qtbase-tests.sh
index 00971c57b7acf740fe3e25acb56eac757eb7dde7..f455cb28baa692fd648d28c03eb7b5825e8ea9f9 100755
--- a/scripts/build-qtbase-tests.sh
+++ b/scripts/build-qtbase-tests.sh
@@ -1,4 +1,4 @@
 #!/bin/bash
 set -ex
 cd ~/build-qt/qtbase
-make sub-tests
+make sub-tests || make sub-tests -j1
diff --git a/scripts/build-qtwayland-examples.sh b/scripts/build-qtwayland-examples.sh
index 257c405c4883e0663b51273aa70f7ad1df0e1703..3d88169c341bd92114771fc25748010144d54d35 100755
--- a/scripts/build-qtwayland-examples.sh
+++ b/scripts/build-qtwayland-examples.sh
@@ -1,4 +1,4 @@
 #!/bin/bash
 set -ex
 cd ~/build-qt/qtwayland
-make sub-examples
+make sub-examples || make sub-examples -j1
diff --git a/scripts/build-qtwayland-tests.sh b/scripts/build-qtwayland-tests.sh
index 2fbccda3f2d15bea9acbeb709f5bf85c140ec861..a5e267f70066c173c7d9cdcb45cfad39452fc914 100755
--- a/scripts/build-qtwayland-tests.sh
+++ b/scripts/build-qtwayland-tests.sh
@@ -1,4 +1,4 @@
 #!/bin/bash
 set -ex
 cd ~/build-qt/qtwayland
-make sub-tests
+make sub-tests || make sub-tests -j1