diff --git a/captcha/experimental.sh b/captcha/experimental.sh
index 2aca554..cd24462 100755
--- a/captcha/experimental.sh
+++ b/captcha/experimental.sh
@@ -152,7 +152,7 @@ INSTRUCTIONS2="...en remplaçant chaque X par la somme"
 MODULES=(CALCUL NOTIN REPLACE REVERSE)
 NMODULES=
 RMODULE=`seq 0 $(( ${#MODULES[@]} - 1)) | sort -R | head -n 1`
-#eval "${MODULES[RMODULE]}"
+eval "${MODULES[RMODULE]}"
 
 TEXT="$NEWINPUT"
 CHAPRILURI="/var/lib/ejabberd/chapril_captchas_experimental/${NAME}_${NEWINPUT}_${INPUT}.png"