diff --git a/explorer.sh b/explorer.sh
index 3fefd16..5d19069 100755
--- a/explorer.sh
+++ b/explorer.sh
@@ -137,6 +137,5 @@ anniversary() {
 # Load functions
 case $cmd in
     '') day;;
-    *) $cmd;;
+    *) [[ $(type -t $cmd) == "function" ]] && $cmd || (echo -e "$cmd: Commande inconnue\n" && helpOpt);;
 esac
-