diff --git a/completion/available/wpscan.completion.bash b/completion/available/wpscan.completion.bash
index 5d2e2daa..8891ab7f 100644
--- a/completion/available/wpscan.completion.bash
+++ b/completion/available/wpscan.completion.bash
@@ -1,7 +1,7 @@
 # shellcheck shell=bash
 
-if command -v wpscan > /dev/null; then
-	__wpscan_completion() {
+if _command_exists wpscan; then
+	function __wpscan_completion() {
 		local OPTS=("--help --hh --version --url --ignore-main-redirect --verbose --output --format --detection-mode --scope --headers --user-agent --vhost --random-user-agent --user-agents-list --http-auth --max-threads --throttle --request-timeout --connect-timeout --disable-tlc-checks --proxy --proxy-auth --cookie-string --cookie-jar --cache-ttl --clear-cache --server --cache-dir --update --no-update --wp-content-dir --wp-plugins-dir --wp-version-detection --main-theme-detection --enumerate --exclude-content-based --plugins-list --plugins-detection --plugins-version-all --plugins-version-detection --themes-list --themes-detection --themes-version-all --themes-version-detection --timthumbs-list --timthumbs-detection --config-backups-list --config-backups-detection --db-exports-list --db-exports-detection --medias-detection --users-list --users-detection --passwords --usernames --multicall-max-passwords --password-attack --stealthy")
 		COMPREPLY=()
 		for _opt_ in "${OPTS[@]}"; do