diff --git a/src/async.zsh b/src/async.zsh
index 1d2ae87..ddc07a5 100644
--- a/src/async.zsh
+++ b/src/async.zsh
@@ -22,7 +22,7 @@ _zsh_autosuggest_async_suggestion_server() {
 		kill -KILL %1 &>/dev/null
 
 		# Run suggestion search in the background
-		echo -n -E "$($strategy "$prefix")"$'\0' &
+		(echo -n -E "$($strategy "$prefix")"$'\0') &
 	done
 }
 
diff --git a/zsh-autosuggestions.zsh b/zsh-autosuggestions.zsh
index b72f3e2..bcee1ee 100644
--- a/zsh-autosuggestions.zsh
+++ b/zsh-autosuggestions.zsh
@@ -506,7 +506,7 @@ _zsh_autosuggest_async_suggestion_server() {
 		kill -KILL %1 &>/dev/null
 
 		# Run suggestion search in the background
-		echo -n -E "$($strategy "$prefix")"$'\0' &
+		(echo -n -E "$($strategy "$prefix")"$'\0') &
 	done
 }