diff --git a/org.eclipse.m2e.wtp/src/org/eclipse/m2e/wtp/WTPProjectConfigurator.java b/org.eclipse.m2e.wtp/src/org/eclipse/m2e/wtp/WTPProjectConfigurator.java
index 96dda1b..896992e 100644
--- a/org.eclipse.m2e.wtp/src/org/eclipse/m2e/wtp/WTPProjectConfigurator.java
+++ b/org.eclipse.m2e.wtp/src/org/eclipse/m2e/wtp/WTPProjectConfigurator.java
@@ -158,6 +158,6 @@
   }
   
   protected boolean isMutable(IProject project) {
-	  return project != null && project.isAccessible() && !project.getResourceAttributes().isReadOnly();
+	  return project != null && project.isAccessible() && project.getResourceAttributes() != null && !project.getResourceAttributes().isReadOnly();
   }
 }