diff --git a/shell-integration/bash/kitty.bash b/shell-integration/bash/kitty.bash
index 13259f7eb..df7068216 100644
--- a/shell-integration/bash/kitty.bash
+++ b/shell-integration/bash/kitty.bash
@@ -122,3 +122,5 @@ _ksi_main() {
 }
 _ksi_main
 unset -f _ksi_main
+# freeze _ksi_prompt to prevent it from being changed
+declare -r _ksi_prompt