diff --git a/src/html_epub_preprocessor.py b/src/html_epub_preprocessor.py
index 06878de..ce262cb 100644
--- a/src/html_epub_preprocessor.py
+++ b/src/html_epub_preprocessor.py
@@ -404,6 +404,7 @@ def preprocess_pre_tags(chapter_tag):
             if isinstance(child, NavigableString):
                 child.text = escape(pre.text)
         pre.name = 'span'
+        pre.attrs['style'] = "white-space: pre-wrap;"
         wrap_span_with_table(chapter_tag, pre)