Index: src/DeltaShell/DeltaShell.Gui/Forms/MessageWindow/MessageWindow.cs
===================================================================
diff -u -ra0b4632c9d4f89335cbb7e0de45e525481586392 -rc40ba70ef75a3682fcfb49c2601bfcc3048ee9d1
--- src/DeltaShell/DeltaShell.Gui/Forms/MessageWindow/MessageWindow.cs	(.../MessageWindow.cs)	(revision a0b4632c9d4f89335cbb7e0de45e525481586392)
+++ src/DeltaShell/DeltaShell.Gui/Forms/MessageWindow/MessageWindow.cs	(.../MessageWindow.cs)	(revision c40ba70ef75a3682fcfb49c2601bfcc3048ee9d1)
@@ -278,7 +278,7 @@
             }
             else
             {
-                var filter = filterlines[0];
+                string filter = filterlines[0];
                 for (var i = 1; i < filterlines.Count; i++)
                 {
                     filter += " OR " + filterlines[i];