diff --git a/docs/source/interfaces/index.rst b/docs/source/interfaces/index.rst
index a5aad9e94446971187d1549c05e2f85bc8b387f0..b93336b23c2a61447969ce7b8bde6300ab49eb9c 100644
--- a/docs/source/interfaces/index.rst
+++ b/docs/source/interfaces/index.rst
@@ -7,9 +7,9 @@
 
 .. _interfaces contents:
 
-============
- Interfaces
-============
+===========
+Interfaces
+===========
 
 .. toctree::
    :hidden:
diff --git a/docs/source/techniques/index.rst b/docs/source/techniques/index.rst
index cb730d2c3b78e33296f30ca37d120f5d4726995a..385d297c578306cb9fde2891fcfdc4b86b734b3a 100644
--- a/docs/source/techniques/index.rst
+++ b/docs/source/techniques/index.rst
@@ -7,9 +7,9 @@
 
 .. _techniques contents:
 
-============
- Techniques
-============
+===========
+Techniques
+===========
 
 .. toctree::
    :hidden: