diff --git a/scripts/_common.sh b/scripts/_common.sh
index badf370..bdffd56 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -89,76 +89,3 @@ ynh_smart_mktemp () {
 #=================================================
 # FUTURE OFFICIAL HELPERS
 #=================================================
-
-# Open a connection as a user
-#
-# example: ynh_mysql_connect_as --user="user" --password="pass" <<< "UPDATE ...;"
-# example: ynh_mysql_connect_as --user="user" --password="pass" --default_character_set="utf8mb4" < /path/to/file.sql
-#
-# usage: ynh_mysql_connect_as --user=user --password=password [--database=database] [--default_character_set=character-set]
-# | arg: -u, --user=                        - the user name to connect as
-# | arg: -p, --password=                    - the user password
-# | arg: -d, --database=                    - the database to connect to
-# | arg: -c, --default_character_set=       - the charset to use
-#
-# Requires YunoHost version 2.2.4 or higher.
-ynh_mysql_connect_as() {
-    # Declare an array to define the options of this helper.
-    local legacy_args=updc
-    local -A args_array=( [u]=user= [p]=password= [d]=database= [c]=default_character_set= )
-    local user
-    local password
-    local database
-    local default_character_set
-    # Manage arguments with getopts
-    ynh_handle_getopts_args "$@"
-    database="${database:-}"
-    default_character_set="${default_character_set:-}"
-
-    if [ -n "$default_character_set" ]
-    then
-        default_character_set="--default-character-set=$default_character_set"
-    else
-        default_character_set="--default-character-set=latin1"
-    fi
-
-    mysql --user="$user" --password="$password" "$default_character_set" --batch "$database"
-}
-
-
-
-# Dump a database
-#
-# example: ynh_mysql_dump_db --database=roundcube --default_character_set="utf8mb4" > ./dump.sql
-#
-# usage: ynh_mysql_dump_db --database=database
-# | arg: -d, --database=                    - the database name to dump
-# | arg: -c, --default_character_set=       - the charset to use
-# | ret: the mysqldump output
-#
-# Requires YunoHost version 2.2.4 or higher.
-ynh_mysql_dump_db() {
-    # Declare an array to define the options of this helper.
-    local legacy_args=dc
-    local -A args_array=( [d]=database= [c]=default_character_set= )
-    local database
-    local default_character_set
-    # Manage arguments with getopts
-    ynh_handle_getopts_args "$@"
-    default_character_set="${default_character_set:-}"
-    MYSQL_ROOT_PWD_FILE=/etc/yunohost/mysql
-
-    if [ -n "$default_character_set" ]
-    then
-        default_character_set="--default-character-set=$default_character_set"
-    else
-        # By default, default character set is "latin1"
-        default_character_set="--default-character-set=latin1"
-    fi
-    
-    if [ -f "$MYSQL_ROOT_PWD_FILE" ]; then
-        mysqldump --user="root" --password="$(cat $MYSQL_ROOT_PWD_FILE)" --single-transaction --skip-dump-date "$default_character_set" "$database"
-    else
-        mysqldump --single-transaction --skip-dump-date "$default_character_set" "$database"
-    fi
-}
diff --git a/scripts/_ynh_mysql_connect_as.sh b/scripts/_ynh_mysql_connect_as.sh
new file mode 100644
index 0000000..a22963e
--- /dev/null
+++ b/scripts/_ynh_mysql_connect_as.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# Open a connection as a user
+#
+# example: ynh_mysql_connect_as --user="user" --password="pass" <<< "UPDATE ...;"
+# example: ynh_mysql_connect_as --user="user" --password="pass" --default_character_set="utf8mb4" < /path/to/file.sql
+#
+# usage: ynh_mysql_connect_as --user=user --password=password [--database=database] [--default_character_set=character-set]
+# | arg: -u, --user=                        - the user name to connect as
+# | arg: -p, --password=                    - the user password
+# | arg: -d, --database=                    - the database to connect to
+# | arg: -c, --default_character_set=       - the charset to use
+#
+# Requires YunoHost version 2.2.4 or higher.
+ynh_mysql_connect_as() {
+    # Declare an array to define the options of this helper.
+    local legacy_args=updc
+    local -A args_array=( [u]=user= [p]=password= [d]=database= [c]=default_character_set= )
+    local user
+    local password
+    local database
+    local default_character_set
+    # Manage arguments with getopts
+    ynh_handle_getopts_args "$@"
+    database="${database:-}"
+    default_character_set="${default_character_set:-}"
+
+    if [ -n "$default_character_set" ]
+    then
+        default_character_set="--default-character-set=$default_character_set"
+    else
+        default_character_set="--default-character-set=latin1"
+    fi
+
+    mysql --user="$user" --password="$password" "$default_character_set" --batch "$database"
+}
\ No newline at end of file
diff --git a/scripts/_ynh_mysql_dump_db.sh b/scripts/_ynh_mysql_dump_db.sh
new file mode 100644
index 0000000..3b922bb
--- /dev/null
+++ b/scripts/_ynh_mysql_dump_db.sh
@@ -0,0 +1,37 @@
+#!/bin/bash
+
+# Dump a database
+#
+# example: ynh_mysql_dump_db --database=roundcube --default_character_set="utf8mb4" > ./dump.sql
+#
+# usage: ynh_mysql_dump_db --database=database
+# | arg: -d, --database=                    - the database name to dump
+# | arg: -c, --default_character_set=       - the charset to use
+# | ret: the mysqldump output
+#
+# Requires YunoHost version 2.2.4 or higher.
+ynh_mysql_dump_db() {
+    # Declare an array to define the options of this helper.
+    local legacy_args=dc
+    local -A args_array=( [d]=database= [c]=default_character_set= )
+    local database
+    local default_character_set
+    # Manage arguments with getopts
+    ynh_handle_getopts_args "$@"
+    default_character_set="${default_character_set:-}"
+    MYSQL_ROOT_PWD_FILE=/etc/yunohost/mysql
+
+    if [ -n "$default_character_set" ]
+    then
+        default_character_set="--default-character-set=$default_character_set"
+    else
+        # By default, default character set is "latin1"
+        default_character_set="--default-character-set=latin1"
+    fi
+    
+    if [ -f "$MYSQL_ROOT_PWD_FILE" ]; then
+        mysqldump --user="root" --password="$(cat $MYSQL_ROOT_PWD_FILE)" --single-transaction --skip-dump-date "$default_character_set" "$database"
+    else
+        mysqldump --single-transaction --skip-dump-date "$default_character_set" "$database"
+    fi
+}
\ No newline at end of file
diff --git a/scripts/backup b/scripts/backup
index dbbbfdd..6fd1086 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -8,6 +8,7 @@
 
 source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
+source ../settings/scripts/_ynh_mysql_dump_db.sh
 
 #=================================================
 # MANAGE SCRIPT FAILURE
diff --git a/scripts/install b/scripts/install
index d538bc6..19dcb67 100755
--- a/scripts/install
+++ b/scripts/install
@@ -8,6 +8,7 @@
 
 source _common.sh
 source /usr/share/yunohost/helpers
+source _ynh_mysql_connect_as.sh
 
 #=================================================
 # MANAGE SCRIPT FAILURE
diff --git a/scripts/restore b/scripts/restore
index 980e3b0..83c233f 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -8,6 +8,7 @@
 
 source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
+source ../settings/scripts/_ynh_mysql_connect_as.sh
 
 #=================================================
 # MANAGE SCRIPT FAILURE