diff --git a/doc/source/written/background/index.rst b/doc/source/written/background/index.rst
index 423c96fd..ccc6a32a 100644
--- a/doc/source/written/background/index.rst
+++ b/doc/source/written/background/index.rst
@@ -6,10 +6,11 @@ Background, details, special topics
 
 .. toctree::
 
-   ase
-   coord_trans
-   param_study
    parsing
    phonon_dos
+   qha
+   param_study
    pwscf
+   ase
    rbf
+   coord_trans
diff --git a/doc/source/written/qha.md b/doc/source/written/background/qha.md
similarity index 99%
rename from doc/source/written/qha.md
rename to doc/source/written/background/qha.md
index bf49f3bf..11e710ca 100644
--- a/doc/source/written/qha.md
+++ b/doc/source/written/background/qha.md
@@ -2,7 +2,7 @@
 # Quasi-harmonic approximation
 
 See {class}`~pwtools.thermo.HarmonicThermo` +
-`test/test_qha.py`, {class}`~pwtools.thermo.Gibbs` + `tesst/test_gibbs.py`.
+`test/test_qha.py`, {class}`~pwtools.thermo.Gibbs` + `test/test_gibbs.py`.
 
 The distinctive feature of the pwtools implementation is that in
 {class}`~pwtools.thermo.Gibbs`, we treat unit cell axes instead of just the