diff --git a/modules/history-substring-search/init.zsh b/modules/history-substring-search/init.zsh
index fc02836..619bda0 100644
--- a/modules/history-substring-search/init.zsh
+++ b/modules/history-substring-search/init.zsh
@@ -1,14 +1,11 @@
 #
-# enables searching history with substrings
+# Enable searching history with substrings
 #
 
-# source script
+# Source script
 source ${0:h}/external/zsh-history-substring-search.zsh || return 1
 
-# bind UP and DOWN keys
+# Bind up and down keys
+zmodload -F zsh/terminfo +p:terminfo
 bindkey "${terminfo[kcuu1]}" history-substring-search-up
 bindkey "${terminfo[kcud1]}" history-substring-search-down
-
-# bind UP and DOWN arrow keys (compatibility fallback)
-bindkey '^[[A' history-substring-search-up
-bindkey '^[[B' history-substring-search-down