diff --git a/doc/source/conf.py b/doc/source/conf.py
index 95d84c65..209f2107 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -231,7 +231,7 @@ latex_elements = {
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
     (master_doc, 'doc-' + target_name + '.tex',
-     title.replace("_", "\_"), author, 'manual'),
+     title.replace("_", r"\_"), author, 'manual'),
 ]
 
 latex_use_xindy = False