diff --git a/src/shell/atuin.bash b/src/shell/atuin.bash
index e47e3c9..6295a4e 100644
--- a/src/shell/atuin.bash
+++ b/src/shell/atuin.bash
@@ -2,7 +2,7 @@ ATUIN_SESSION=$(atuin uuid)
 export ATUIN_SESSION
 
 _atuin_preexec() {
-    id=$(atuin history start "$1")
+	local id; id=$(atuin history start "$1")
     export ATUIN_HISTORY_ID="$id"
 }
 
diff --git a/src/shell/atuin.zsh b/src/shell/atuin.zsh
index 32cbe6a..e35e16e 100644
--- a/src/shell/atuin.zsh
+++ b/src/shell/atuin.zsh
@@ -13,7 +13,7 @@ export ATUIN_SESSION=$(atuin uuid)
 export ATUIN_HISTORY="atuin history list"
 
 _atuin_preexec(){
-	id=$(atuin history start "$1")
+	local id; id=$(atuin history start "$1")
 	export ATUIN_HISTORY_ID="$id"
 }