diff --git a/qualtran/surface_code/thc_compilation.ipynb b/qualtran/surface_code/thc_compilation.ipynb
index e82d0fee44..12b83ccca5 100644
--- a/qualtran/surface_code/thc_compilation.ipynb
+++ b/qualtran/surface_code/thc_compilation.ipynb
@@ -9,7 +9,7 @@
     "In this notebook we provide an example of the CCZ cost model functionalities by attempting to reproduce results from section IV.C of [Lee et al. 2021](https://link.aps.org/doi/10.1103/PRXQuantum.2.030305) (surface code compliation of quantum phase estimation on the THC-encoded Li et al. FeMoco Hamiltonian).\n",
     "\n",
     "\n",
-    "### manual choice of distillation and data parameters\n",
+    "### Manual choice of distillation and data parameters\n",
     "\n",
     "The physical costs can be computed by specifying manually the factories used for magic state distillation and the surface code parameters."
    ]