diff --git a/MainWindow.cs b/MainWindow.cs
index a0f1ea3..542e2fe 100755
--- a/MainWindow.cs
+++ b/MainWindow.cs
@@ -166,7 +166,6 @@ namespace Buypeeb {
 
 			for (int i = 0; i < this.itemTreeView.Columns.Length; i++) {
 				var c = this.itemTreeView.Columns[i];
-
 				c.SetCellDataFunc(c.Cells[0], funcs[i]);
 			}
 
@@ -327,8 +326,7 @@ namespace Buypeeb {
 			if (item == null) {
 				this.selectionViewBox.Sensitive = false;
 				infobox.Visible = false;
-				var l = (Label)this.builder.GetObject("LabelSelectedName");
-				l.Text = "buypeeb";
+				(this.builder.GetObject("LabelSelectedName") as Label).Text = "buypeeb";
 				return;
 			}
 
@@ -348,8 +346,7 @@ namespace Buypeeb {
 			};
 
 			foreach (var row in info) {
-				var l = (Label)this.builder.GetObject($"LabelSelected{row.Key}");
-				l.Text = row.Value;
+				(this.builder.GetObject($"LabelSelected{row.Key}") as Label).Text = row.Value;
 			}
 			this.UpdateSelectionEndTime();
 
@@ -359,8 +356,7 @@ namespace Buypeeb {
 				noteBuffer.Text = item.notes;
 			}
 
-			var f = (ToggleButton)this.builder.GetObject("ButtonSelectedFavourite");
-			f.Active = item.favourite;
+			(this.builder.GetObject("ButtonSelectedFavourite") as ToggleButton).Active = item.favourite;
 
 		}
 		private void OpenUrl(string url) {
@@ -485,8 +481,7 @@ namespace Buypeeb {
 				}
 			}
 
-			var m = (TreeModelFilter)this.itemTreeView.Model;
-			m.Refilter();
+			(this.itemTreeView.Model as TreeModelFilter).Refilter();
 
 			if (id != null) {
 				// attempt to reselect the item we were just looking at
@@ -910,8 +905,7 @@ namespace Buypeeb {
 		}
 
 		private void RunFilter(object sender, EventArgs a) {
-			var m = (TreeModelFilter)this.itemTreeView.Model;
-			m.Refilter();
+			(this.itemTreeView.Model as TreeModelFilter).Refilter();
 		}
 	}
 }