diff --git a/Doc/texinputs/howto.cls b/Doc/texinputs/howto.cls
index ad376c6..127edc4 100644
--- a/Doc/texinputs/howto.cls
+++ b/Doc/texinputs/howto.cls
@@ -12,6 +12,7 @@
 %
 \LoadClass[twoside]{article}
 
+\setcounter{secnumdepth}{1}
 
 % Optional packages:
 %
diff --git a/Doc/texinputs/manual.cls b/Doc/texinputs/manual.cls
index 21e74c9..45939c9 100644
--- a/Doc/texinputs/manual.cls
+++ b/Doc/texinputs/manual.cls
@@ -13,6 +13,7 @@
 %
 \LoadClass[\py@paper,\py@ptsize,twoside,openright]{report}
 
+\setcounter{secnumdepth}{2}
 
 % Optional packages:
 %
diff --git a/Doc/texinputs/python.sty b/Doc/texinputs/python.sty
index 3c932cf..3c67818 100644
--- a/Doc/texinputs/python.sty
+++ b/Doc/texinputs/python.sty
@@ -118,7 +118,6 @@
 
 \pagestyle{empty}		% start this way; change for
 \pagenumbering{roman}		% ToC & chapters
-\setcounter{secnumdepth}{1}
 
 % Use this to set the font family for headers and other decor:
 \newcommand{\py@HeaderFamily}{\sffamily}