diff --git a/apps/calculation/text_field.cpp b/apps/calculation/text_field.cpp
index 610703849..471ff8d54 100644
--- a/apps/calculation/text_field.cpp
+++ b/apps/calculation/text_field.cpp
@@ -22,7 +22,8 @@ bool TextField::handleEvent(Ion::Events::Event event) {
        event == Ion::Events::Plus ||
        event == Ion::Events::Power ||
        event == Ion::Events::Square ||
-       event == Ion::Events::Division)) {
+       event == Ion::Events::Division ||
+       event == Ion::Events::Sto)) {
     if (!isEditing()) {
       setEditing(true);
       setText("");