diff --git a/com.ibm.wala.cast.js.test/harness-src/com/ibm/wala/cast/js/test/TestForInLoopHack.java b/com.ibm.wala.cast.js.test/harness-src/com/ibm/wala/cast/js/test/TestForInLoopHack.java
index 23818dec4..34ef64fb2 100644
--- a/com.ibm.wala.cast.js.test/harness-src/com/ibm/wala/cast/js/test/TestForInLoopHack.java
+++ b/com.ibm.wala.cast.js.test/harness-src/com/ibm/wala/cast/js/test/TestForInLoopHack.java
@@ -13,7 +13,7 @@ import com.ibm.wala.ipa.callgraph.CallGraph;
 import com.ibm.wala.ipa.callgraph.ContextSelector;
 import com.ibm.wala.util.CancelException;
 
-public class TestForInLoopHack extends TestJSCallGraphShape {
+public abstract class TestForInLoopHack extends TestJSCallGraphShape {
 
   @Before
   public void config() {
diff --git a/com.ibm.wala.cast.js.test/harness-src/com/ibm/wala/cast/js/test/TestMozillaBugPages.java b/com.ibm.wala.cast.js.test/harness-src/com/ibm/wala/cast/js/test/TestMozillaBugPages.java
index f0094a99b..e8599172f 100644
--- a/com.ibm.wala.cast.js.test/harness-src/com/ibm/wala/cast/js/test/TestMozillaBugPages.java
+++ b/com.ibm.wala.cast.js.test/harness-src/com/ibm/wala/cast/js/test/TestMozillaBugPages.java
@@ -11,7 +11,7 @@ import com.ibm.wala.cast.js.ipa.callgraph.JSCFABuilder;
 import com.ibm.wala.ipa.callgraph.CallGraph;
 import com.ibm.wala.util.CancelException;
 
-public class TestMozillaBugPages extends TestJSCallGraphShape {
+public abstract class TestMozillaBugPages extends TestJSCallGraphShape {
 
   public static void main(String[] args) {
     justThisTest(TestMozillaBugPages.class);