diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 745ad074..8d9c2261 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -140,15 +140,19 @@ jobs:
       run: |
         PLATFORM_CONF=""
         if [ ${{ matrix.confs.test }} ]; then
-          PLATFORM_CONF="$PLATFORM_CONF --examples=y --tests=y" >> $GITHUB_ENV
+          PLATFORM_CONF="$PLATFORM_CONF --examples=y --tests=y"
         fi
         # MinGW has some issues with unitybuild
         if [ "${{ matrix.confs.plat }}" != "mingw" ]; then
-          PLATFORM_CONF="$PLATFORM_CONF --unitybuild=y" >> $GITHUB_ENV
+          PLATFORM_CONF="$PLATFORM_CONF --unitybuild=y"
+        fi
+        # MinGW 32bits fails because it allocates too much memory for the system
+        if [ "${{ matrix.confs.plat }}" == "mingw" ] && [ "${{ matrix.confs.msystem }}" == "mingw32" ]; then
+          echo "BUILD_CONF=-j1" >> $GITHUB_ENV
         fi
         # Android and Emscripten don't support filesystem watcher
         if [ "${{ matrix.confs.plat }}" == "android" ] || [ "${{ matrix.confs.plat }}" == "wasm" ]; then
-          PLATFORM_CONF="$PLATFORM_CONF --fs_watcher=n" >> $GITHUB_ENV
+          PLATFORM_CONF="$PLATFORM_CONF --fs_watcher=n"
         fi
         echo "ADDITIONAL_CONF=${{ env.ADDITIONAL_CONF }} $PLATFORM_CONF" >> $GITHUB_ENV
         FILENAME="nzsl_${{ matrix.confs.plat }}_${{ matrix.confs.arch }}_${{ matrix.kind }}"
@@ -176,7 +180,7 @@ jobs:
 
     # Build library and tests
     - name: Build library
-      run: xmake
+      run: xmake ${{ env.BUILD_CONF }}
 
     # Run unit tests
     - name: Run unit tests