diff --git a/src/Main/Base/Project/Dom/ClassBrowser/AssemblyReferenceTreeNode.cs b/src/Main/Base/Project/Dom/ClassBrowser/AssemblyReferenceTreeNode.cs
index ef66977e7a..1c324201e2 100644
--- a/src/Main/Base/Project/Dom/ClassBrowser/AssemblyReferenceTreeNode.cs
+++ b/src/Main/Base/Project/Dom/ClassBrowser/AssemblyReferenceTreeNode.cs
@@ -19,6 +19,9 @@ namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
 			if (model == null)
 				throw new ArgumentNullException("model");
 			this.model = model;
+			
+			// To avoid the "+" sign in front of node...
+			this.LazyLoading = false;
 		}
 		
 		protected override object GetModel()