diff --git a/.github/workflows/ant.yml b/.github/workflows/ant.yml
index c89a8b7..2093f09 100644
--- a/.github/workflows/ant.yml
+++ b/.github/workflows/ant.yml
@@ -37,9 +37,11 @@ jobs:
       run: ant jar
 
     - name: Run some examples
-      run: |
-         ./run.sh examples/l22_small.swc -exportnml1
-         ./run.sh examples/l22_small.swc -exportnml2
+      uses: coactions/setup-xvfb@v1
+      with:
+          run: |
+            ./run.sh examples/l22_small.swc -exportnml1
+            ./run.sh examples/l22_small.swc -exportnml2
 
     - name: Test with Ant
       uses: coactions/setup-xvfb@v1