diff --git a/lib/marquee.dart b/lib/marquee.dart
index 79abcd9..7eba221 100644
--- a/lib/marquee.dart
+++ b/lib/marquee.dart
@@ -696,7 +696,10 @@ class _MarqueeState extends State<Marquee> with SingleTickerProviderStateMixin {
 
     final constraints = BoxConstraints(maxWidth: double.infinity);
 
-    final richTextWidget = Text.rich(span).build(context) as RichText;
+    final richTextWidget = Text.rich(
+      span,
+      textScaler: TextScaler.linear(widget.textScaleFactor),
+    ).build(context) as RichText;
     final renderObject = richTextWidget.createRenderObject(context);
     renderObject.layout(constraints);