diff --git a/.github/workflows/ant.yml b/.github/workflows/ant.yml
index 766f7a5b9..5fd7b17c0 100644
--- a/.github/workflows/ant.yml
+++ b/.github/workflows/ant.yml
@@ -10,15 +10,19 @@ on:
     branches: [ master ]
 
 jobs:
-  build:
-
+  build:      
     runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 1.11
-      uses: actions/setup-java@v1
-      with:
-        java-version: '11.0.2'
-    - name: Build with Ant
-      run: ant -noinput -buildfile build.xml swg-ci
+    
+    rules:
+      - exists:
+        - sku.0/*.java
+          
+    steps:          
+      - uses: actions/checkout@v2
+      - name: Set up JDK 1.11
+        uses: actions/setup-java@v1
+        with:
+          java-version: '11.0.2'
+      - name: Build with Ant
+        run: ant -noinput -buildfile build.xml compile_java
+