diff --git a/doc/examples/3_ert/plot_01_ert_2d_mod_inv.py b/doc/examples/3_ert/plot_01_ert_2d_mod_inv.py
index 6b3b385fd..08203e603 100644
--- a/doc/examples/3_ert/plot_01_ert_2d_mod_inv.py
+++ b/doc/examples/3_ert/plot_01_ert_2d_mod_inv.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 """
 2D ERT modelling and inversion
-=============================
+==============================
 """
 # sphinx_gallery_thumbnail_number = 6
 
diff --git a/doc/examples/3_ert/plot_modTank3d.py b/doc/examples/3_ert/plot_modTank3d.py
index 2c2167153..3f8df6bd0 100644
--- a/doc/examples/3_ert/plot_modTank3d.py
+++ b/doc/examples/3_ert/plot_modTank3d.py
@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 """
 3D modelling in a closed geometry
-================================
+=================================
 
 This is a synthetic model of an experimental tank with a highly heterogeneous
 resistivity, motivated by the BAM Berlin.
diff --git a/doc/examples/3_induced_polarization/plot_02_generating_sip_signatures.py b/doc/examples/3_induced_polarization/plot_02_generating_sip_signatures.py
index 21ae39cb2..2049ca13f 100644
--- a/doc/examples/3_induced_polarization/plot_02_generating_sip_signatures.py
+++ b/doc/examples/3_induced_polarization/plot_02_generating_sip_signatures.py
@@ -3,7 +3,7 @@
 
 r"""
 Generating SIP signatures
--------------------------
+=========================
 
 This example highlights some of the capabilities of pyGimli to generate
 spectral induced polarization (SIP) signatures."""
diff --git a/doc/examples/3_induced_polarization/plot_03_fitting_sip_signatures.py b/doc/examples/3_induced_polarization/plot_03_fitting_sip_signatures.py
index b3f473614..1d0d71131 100644
--- a/doc/examples/3_induced_polarization/plot_03_fitting_sip_signatures.py
+++ b/doc/examples/3_induced_polarization/plot_03_fitting_sip_signatures.py
@@ -3,7 +3,7 @@
 
 r"""
 Fitting SIP signatures
-----------------------
+======================
 
 This example highlights some of the capabilities of pyGimli to analyze spectral
 induced polarization (SIP) signatures.
diff --git a/doc/examples/3_induced_polarization/plot_06_complex_modeling.py b/doc/examples/3_induced_polarization/plot_06_complex_modeling.py
index e4b059d99..ecd53ecd5 100644
--- a/doc/examples/3_induced_polarization/plot_06_complex_modeling.py
+++ b/doc/examples/3_induced_polarization/plot_06_complex_modeling.py
@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 r"""
 Complex-valued electrical modelling
-----------------------------------
+===================================
 
 In this example, an electrical complex-valued forward modelling is conducted.
 The use of complex resistivities implies an out-of-phase polarization response
diff --git a/doc/examples/3_induced_polarization/plot_07_simple_complex_inversion.py b/doc/examples/3_induced_polarization/plot_07_simple_complex_inversion.py
index 986749943..72a00e60e 100644
--- a/doc/examples/3_induced_polarization/plot_07_simple_complex_inversion.py
+++ b/doc/examples/3_induced_polarization/plot_07_simple_complex_inversion.py
@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 r"""
 Naive complex-valued electrical inversion
------------------------------------------
+=========================================
 
 This example presents a quick and dirty proof-of-concept for a complex-valued
 inversion, similar to Kemna, 2000. The normal equations are solved using numpy,
diff --git a/doc/examples/3_induced_polarization/plot_08_TDIPinversion.py b/doc/examples/3_induced_polarization/plot_08_TDIPinversion.py
index 8cf888956..c8df205ee 100644
--- a/doc/examples/3_induced_polarization/plot_08_TDIPinversion.py
+++ b/doc/examples/3_induced_polarization/plot_08_TDIPinversion.py
@@ -3,6 +3,7 @@
 r"""
 Synthetic TDIP modelling and inversion
 ======================================
+
 This example demonstrates the ERTIPManager introduced in
 pyGIMLi v1.4.3 for use with time-domain chargeability.