diff --git a/apps/math_toolbox.cpp b/apps/math_toolbox.cpp
index 1d4900c9785..011533f7b86 100644
--- a/apps/math_toolbox.cpp
+++ b/apps/math_toolbox.cpp
@@ -38,7 +38,9 @@ const ToolboxMessageTree complexChildren[] = {
 
 const ToolboxMessageTree combinatoricsChildren[] = {
   ToolboxMessageTree::Leaf(I18n::Message::BinomialCommandWithArg, I18n::Message::Combination),
-  ToolboxMessageTree::Leaf(I18n::Message::PermuteCommandWithArg, I18n::Message::Permutation)
+  ToolboxMessageTree::Leaf(I18n::Message::PermuteCommandWithArg, I18n::Message::Permutation),
+  ToolboxMessageTree::Leaf(I18n::Message::FactorialCommandWithArg,
+  I18n::Message::Factorial)
 };
 
 const ToolboxMessageTree normalDistributionChildren[] = {