diff --git a/packages/flutter_markdown/lib/src/builder.dart b/packages/flutter_markdown/lib/src/builder.dart
index b89ef2e..6f69518 100644
--- a/packages/flutter_markdown/lib/src/builder.dart
+++ b/packages/flutter_markdown/lib/src/builder.dart
@@ -174,7 +174,6 @@
   final List<_TableElement> _tables = <_TableElement>[];
   final List<_InlineElement> _inlines = <_InlineElement>[];
   final List<GestureRecognizer> _linkHandlers = <GestureRecognizer>[];
-  final ScrollController _preScrollController = ScrollController();
   String? _currentBlockTag;
   String? _lastVisitedTag;
   bool _isInBlockquote = false;
@@ -347,10 +346,11 @@
       child = builders[_blocks.last.tag!]!
           .visitText(text, styleSheet.styles[_blocks.last.tag!]);
     } else if (_blocks.last.tag == 'pre') {
+      final ScrollController ppreScrollController = ScrollController();
       child = Scrollbar(
-        controller: _preScrollController,
+        controller: preScrollController,
         child: SingleChildScrollView(
-          controller: _preScrollController,
+          controller: preScrollController,
           scrollDirection: Axis.horizontal,
           padding: styleSheet.codeblockPadding,
           child: _buildRichText(delegate.formatText(styleSheet, text.text)),