diff --git a/bundles/org.pitest.pitclipse.ui/src/org/pitest/pitclipse/ui/view/PitViewFinder.java b/bundles/org.pitest.pitclipse.ui/src/org/pitest/pitclipse/ui/view/PitViewFinder.java
index 1a25b3fa..6422cfaf 100644
--- a/bundles/org.pitest.pitclipse.ui/src/org/pitest/pitclipse/ui/view/PitViewFinder.java
+++ b/bundles/org.pitest.pitclipse.ui/src/org/pitest/pitclipse/ui/view/PitViewFinder.java
@@ -25,11 +25,10 @@
 import org.pitest.pitclipse.ui.view.mutations.MutationsView;
 
 import java.io.File;
+import java.util.HashSet;
 import java.util.Set;
 import java.util.concurrent.atomic.AtomicReference;
 
-import static com.google.common.collect.Sets.newHashSet;
-
 /**
  * Singleton making easier to find Pitclipse views. 
  */
@@ -48,7 +47,7 @@ public MissingViewException(Exception e) {
     }
 
     private static final class ViewSearch implements Runnable {
-        private static Set<String> initialisedViews = newHashSet();
+        private static Set<String> initialisedViews = new HashSet<>();
         private final AtomicReference<IViewPart> viewRef = new AtomicReference<>();
         private final String viewId;