diff --git a/libstdc++-v3/doc/html/manual/source_code_style.html b/libstdc++-v3/doc/html/manual/source_code_style.html
index 669f16d165f..24e0d693127 100644
--- a/libstdc++-v3/doc/html/manual/source_code_style.html
+++ b/libstdc++-v3/doc/html/manual/source_code_style.html
@@ -32,7 +32,7 @@
 <br />
       MS adds:<br />
       _T<br />
-			__deref<br />
+      __deref<br />
 <br />
       BSD adds:<br />
       __used<br />
diff --git a/libstdc++-v3/doc/xml/manual/appendix_contributing.xml b/libstdc++-v3/doc/xml/manual/appendix_contributing.xml
index d346b922907..ceb21f4478a 100644
--- a/libstdc++-v3/doc/xml/manual/appendix_contributing.xml
+++ b/libstdc++-v3/doc/xml/manual/appendix_contributing.xml
@@ -446,7 +446,7 @@ indicate a place that may require attention for multi-thread safety.
 
       MS adds:
       _T
-			__deref
+      __deref
 
       BSD adds:
       __used