diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2696e959b24a9c655c1fb2fb09cc0adaba2e9296..2fb7d4b92f94a50b232eabd89cc3c2db98aed37e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -107,10 +107,10 @@ build-zynthbox-image-armhf:
       git clone https://github.com/zynthbox/zynthbox-qml.git -b dev-rpi5
       apt install libgpiod-dev
       git clone https://github.com/zynthbox/zyncoder.git -b dev-rpi5-libgpiod
-      mkdir -P zyncoder/build
+      mkdir -p zyncoder/build
       cd zyncoder/build
-      ZYNTHIAN_WIRING_LAYOUT="Z2_V2" cmake .. -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=RelWithDebInfo
-      make -j$(nproc) install
+      ZYNTHIAN_WIRING_LAYOUT="Z2_V2" cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=RelWithDebInfo ..
+      make -j4 install
       EOF
     - sudo umount $mountdir/boot/ $mountdir/dev/pts $mountdir/dev/ $mountdir/proc/ $mountdir/sys/
     - sudo umount $mountdir