diff --git a/qualtran/bloqs/mod_arithmetic/mod_division.ipynb b/qualtran/bloqs/mod_arithmetic/mod_division.ipynb
index a01906ac3..96cc07c04 100644
--- a/qualtran/bloqs/mod_arithmetic/mod_division.ipynb
+++ b/qualtran/bloqs/mod_arithmetic/mod_division.ipynb
@@ -40,7 +40,7 @@
     "\n",
     "Applies the transformation\n",
     "$$\n",
-    "    \\ket{x} \\ket{0} \\rightarrow \\ket{x^{-1} 2^{2n} \\mod \\mathrm{mod}} \\ket{\\mathrm{garbage}}\n",
+    "    \\ket{x} \\ket{0} \\rightarrow \\ket{x^{-1} 2^{2n} \\mod p} \\ket{\\mathrm{garbage}}\n",
     "$$\n",
     "\n",
     "#### Parameters\n",