diff --git a/doc/annotations.rst b/doc/annotations.rst
index 1bd5bfa16c8ee7fdc052df314e33d54ffc2447b5..c284229bc38210832db0d2c71399230f9db0cd8b 100644
--- a/doc/annotations.rst
+++ b/doc/annotations.rst
@@ -1,5 +1,6 @@
 .. _bob.bio.base.annotations:
 
+==============================
 Annotating biometric databases
 ==============================
 
diff --git a/doc/implemented.rst b/doc/implemented.rst
index e0f68d0d0521c949dc1f8c24ced0916c735c1631..3e21676e5f5b5539341c39ebe5fd658e2efae477 100644
--- a/doc/implemented.rst
+++ b/doc/implemented.rst
@@ -1,5 +1,6 @@
 .. _bob.bio.base.implemented:
 
+=================================
 Tools implemented in bob.bio.base
 =================================
 
diff --git a/doc/py_api.rst b/doc/py_api.rst
index 6483e2ca2688f988f40148e5ca279beb596af630..13daaa8fe4d4b5327d2ac5c817dec2f99043af0b 100644
--- a/doc/py_api.rst
+++ b/doc/py_api.rst
@@ -1,4 +1,5 @@
 
+===========================
 Python API for bob.bio.base
 ===========================