diff --git a/Source/Engine/UI/GUI/Common/RichTextBoxBase.cs b/Source/Engine/UI/GUI/Common/RichTextBoxBase.cs
index ff94a73f0..97e1d88a5 100644
--- a/Source/Engine/UI/GUI/Common/RichTextBoxBase.cs
+++ b/Source/Engine/UI/GUI/Common/RichTextBoxBase.cs
@@ -378,7 +378,7 @@ namespace FlaxEngine.GUI
                 {
                     var leftEdge = selection.StartIndex <= textBlock.Range.StartIndex ? textBlock.Bounds.UpperLeft : GetCharPosition(selection.StartIndex, out _);
                     var rightEdge = selection.EndIndex >= textBlock.Range.EndIndex ? textBlock.Bounds.UpperRight : GetCharPosition(selection.EndIndex, out _);
-                    float height = font.Height;
+                    float height = font.Height / DpiScale;
 #if PLATFORM_MAC && !PLATFORM_SDL
                     height /= (float)Platform.Dpi / 96.0f; // TODO: refactor DPI support on macOS to skip such hacks
 #endif
@@ -431,7 +431,7 @@ namespace FlaxEngine.GUI
                 if (textBlock.Style.UnderlineBrush != null)
                 {
                     var underLineHeight = 2.0f;
-                    var height = font.Height;
+                    var height = font.Height / DpiScale;
                     var underlineRect = new Rectangle(textBlock.Bounds.Location.X, textBlock.Bounds.Location.Y + height - underLineHeight * 0.5f, textBlock.Bounds.Width, underLineHeight);
                     textBlock.Style.UnderlineBrush.Draw(underlineRect, textBlock.Style.Color);
                 }