diff --git a/FModel/Views/ImageMerger.xaml b/FModel/Views/ImageMerger.xaml
index ffd60a5d..cda98bba 100644
--- a/FModel/Views/ImageMerger.xaml
+++ b/FModel/Views/ImageMerger.xaml
@@ -54,11 +54,11 @@
                     
                     <TextBlock Grid.Row="0" Grid.Column="0" Text="Images Per Row" VerticalAlignment="Center" Margin="0 0 10 0" />
                     <Slider x:Name="SizeSlider" Grid.Row="0" Grid.Column="1" TickPlacement="None" AutoToolTipPlacement="BottomRight"
-                            IsMoveToPointEnabled="True" Minimum="2" Maximum="20" TickFrequency="1" Thumb.DragCompleted="DrawPreview"/>
+                            IsMoveToPointEnabled="True" Minimum="2" Maximum="20" TickFrequency="1" MouseUp="Click_DrawPreview" Thumb.DragCompleted="DrawPreview"/>
                     <TextBlock Grid.Row="2" Grid.Column="0" Text="Margin Between Images" VerticalAlignment="Center" Margin="0 0 10 0" />
                     <Slider Grid.Row="2" Grid.Column="1" Value="{Binding ImageMergerMargin, Source={x:Static local:Settings.UserSettings.Default}, Mode=TwoWay}"
                             TickPlacement="None" AutoToolTipPlacement="BottomRight" IsMoveToPointEnabled="True" Minimum="0" Maximum="50" TickFrequency="1"
-                            Thumb.DragCompleted="DrawPreview" />
+                            MouseUp="Click_DrawPreview" Thumb.DragCompleted="DrawPreview" />
                 </Grid>
                 <StackPanel Grid.Row="3" Orientation="Horizontal" HorizontalAlignment="Center">
                     <Button x:Name="AddButton" Content="Add" MinWidth="80" Padding="1,3,1,3" Click="OnImageAdd"/>
diff --git a/FModel/Views/ImageMerger.xaml.cs b/FModel/Views/ImageMerger.xaml.cs
index 3327a7f3..72a2ed88 100644
--- a/FModel/Views/ImageMerger.xaml.cs
+++ b/FModel/Views/ImageMerger.xaml.cs
@@ -7,6 +7,7 @@ using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Controls.Primitives;
+using System.Windows.Input;
 using System.Windows.Media.Imaging;
 using AdonisUI.Controls;
 using FModel.Extensions;
@@ -30,6 +31,11 @@ namespace FModel.Views
             if (ImagePreview.Source != null)
                 await DrawPreview().ConfigureAwait(false);
         }
+        private async void Click_DrawPreview(object sender, MouseButtonEventArgs e)
+        {
+            if (ImagePreview.Source != null)
+                await DrawPreview().ConfigureAwait(false);        
+        }
 
         private async Task DrawPreview()
         {
@@ -267,5 +273,6 @@ namespace FModel.Views
         }
 
         private void OnCopyImage(object sender, RoutedEventArgs e) => Clipboard.SetImage((BitmapSource) ImagePreview.Source);
+        
     }
 }
\ No newline at end of file