diff --git a/docs/library/uos.rst b/docs/library/uos.rst
index f043883ad1..bb95107c04 100644
--- a/docs/library/uos.rst
+++ b/docs/library/uos.rst
@@ -1,5 +1,5 @@
 :mod:`uos` -- basic "operating system" services
-==============================================
+===============================================
 
 .. module:: uos
    :synopsis: basic "operating system" services
diff --git a/docs/library/utime.rst b/docs/library/utime.rst
index 4dff9a3589..e7fc6813dc 100644
--- a/docs/library/utime.rst
+++ b/docs/library/utime.rst
@@ -1,5 +1,5 @@
 :mod:`utime` -- time related functions
-=====================================
+======================================
 
 .. module:: utime
    :synopsis: time related functions