diff --git a/conf/mysql_hook_regen_conf b/conf/mysql_hook_regen_conf
deleted file mode 100644
index da33537..0000000
--- a/conf/mysql_hook_regen_conf
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/bash
-
-action=$1
-pending_dir=$4
-mysqlconf="${pending_dir}/../mysql/etc/mysql/my.cnf"
-
-[[ "$action" == "pre" ]] || exit 0
-[[ -e "$mysqlconf" ]] || exit 0
-
-sed --in-place "s@thread_stack = 128K@thread_stack = 192K@g" "${mysqlconf}"
\ No newline at end of file
diff --git a/scripts/install b/scripts/install
index d0b5e33..f5e663a 100644
--- a/scripts/install
+++ b/scripts/install
@@ -115,14 +115,6 @@ ynh_add_fpm_config --usage=low --footprint=low
 
 #=================================================
 # SPECIFIC SETUP
-#=================================================
-# UPGRADE THREAD_STACK
-#=================================================
-ynh_script_progression --message="Upgrading thread_stack..."
-
-cp -R ../conf/mysql_hook_regen_conf /usr/share/yunohost/hooks/conf_regen/34-mysql_$app
-yunohost tools regen-conf mysql --force
-
 #=================================================
 # CREATE DRUSH ALIAS
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 563b2ee..96b7310 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -59,6 +59,9 @@ if ynh_legacy_permissions_exists; then
 	ynh_app_setting_delete --app=$app --key=is_public
 fi
 
+ynh_secure_remove --file="/usr/share/yunohost/hooks/conf_regen/34-mysql_$app"
+yunohost tools regen-conf mysql --force
+
 #=================================================
 # CREATE DEDICATED USER
 #=================================================
@@ -110,14 +113,6 @@ ynh_add_fpm_config --usage=low --footprint=low
 
 #=================================================
 # SPECIFIC UPGRADE
-#=================================================
-# UPGRADE THREAD_STACK
-#=================================================
-ynh_script_progression --message="Upgrading thread_stack..."
-
-cp -R ../conf/mysql_hook_regen_conf /usr/share/yunohost/hooks/conf_regen/34-mysql_$app
-yunohost tools regen-conf mysql --force
-
 #=================================================
 # SETUP THE CRON FILE
 #=================================================