diff --git a/pmd-eclipse-plugin/plugins/net.sourceforge.pmd.eclipse.plugin/src/net/sourceforge/pmd/eclipse/plugin/FileChangeReviewer.java b/pmd-eclipse-plugin/plugins/net.sourceforge.pmd.eclipse.plugin/src/net/sourceforge/pmd/eclipse/plugin/FileChangeReviewer.java
index 860f934ecd..f3bc5426c5 100644
--- a/pmd-eclipse-plugin/plugins/net.sourceforge.pmd.eclipse.plugin/src/net/sourceforge/pmd/eclipse/plugin/FileChangeReviewer.java
+++ b/pmd-eclipse-plugin/plugins/net.sourceforge.pmd.eclipse.plugin/src/net/sourceforge/pmd/eclipse/plugin/FileChangeReviewer.java
@@ -74,6 +74,8 @@ public class FileChangeReviewer implements IResourceChangeListener {
 			changed(itemsChanged, event.getDelta(), EclipseUtil.DUMMY_MONITOR);
 		}
 		
+		if (itemsChanged.isEmpty()) return;
+		
 		ReviewCodeCmd cmd = new ReviewCodeCmd();	// separate one for each thread
 		cmd.reset();
 		
diff --git a/pmd-eclipse-plugin/plugins/net.sourceforge.pmd.eclipse.plugin/src/net/sourceforge/pmd/eclipse/ui/preferences/GeneralPreferencesPage.java b/pmd-eclipse-plugin/plugins/net.sourceforge.pmd.eclipse.plugin/src/net/sourceforge/pmd/eclipse/ui/preferences/GeneralPreferencesPage.java
index 25fbee40d3..fcea22f2c5 100644
--- a/pmd-eclipse-plugin/plugins/net.sourceforge.pmd.eclipse.plugin/src/net/sourceforge/pmd/eclipse/ui/preferences/GeneralPreferencesPage.java
+++ b/pmd-eclipse-plugin/plugins/net.sourceforge.pmd.eclipse.plugin/src/net/sourceforge/pmd/eclipse/ui/preferences/GeneralPreferencesPage.java
@@ -57,7 +57,6 @@ import org.eclipse.swt.widgets.Link;
 import org.eclipse.swt.widgets.Scale;
 import org.eclipse.swt.widgets.Spinner;
 import org.eclipse.swt.widgets.Table;
-import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPreferencePage;