diff --git a/src/cascadia/WpfTerminalControl/TerminalControl.xaml.cs b/src/cascadia/WpfTerminalControl/TerminalControl.xaml.cs
index 62ec5cc4497..87c2df25a06 100644
--- a/src/cascadia/WpfTerminalControl/TerminalControl.xaml.cs
+++ b/src/cascadia/WpfTerminalControl/TerminalControl.xaml.cs
@@ -191,7 +191,7 @@ private Thickness CalculateMargins(Size controlSize = default)
 
             if (this.TerminalRendererSize.Height != 0)
             {
-                height = controlSize.Height - (this.TerminalRendererSize.Height / dpiScale.DpiScaleX);
+                height = controlSize.Height - (this.TerminalRendererSize.Height / dpiScale.DpiScaleY);
             }
 
             width -= this.scrollbar.ActualWidth;