diff --git a/install_mysql.sh b/install_mysql.sh
index db97980..3170c8b 100755
--- a/install_mysql.sh
+++ b/install_mysql.sh
@@ -1508,25 +1508,29 @@ if ! $UPDATE_MYSQL && ! $PARALLEL_INSTALLATION ; then
    # -
    _failed=false
    echononl "Install Percona apt repository .."
-   echo "" >> ${logdir}/main.log
-   echo "## - Install Percona apt repository .." >> ${logdir}/main.log
-   echo "## -" >> ${logdir}/main.log
-   echo "wget -O /tmp/percona-release_0.1-5.$(lsb_release -sc)_all.deb https://repo.percona.com/apt/percona-release_0.1-5.$(lsb_release -sc)_all.deb" >> ${logdir}/main.log
-   wget -O /tmp/percona-release_0.1-5.$(lsb_release -sc)_all.deb https://repo.percona.com/apt/percona-release_0.1-5.$(lsb_release -sc)_all.deb >> ${logdir}/main.log  2>&1
-   if [[ $? -ne 0 ]]; then
-      _failed=true
-   fi
-   echo "dpkg -i /tmp/percona-release_0.1-5.$(lsb_release -sc)_all.deb" >> ${logdir}/main.log  2>&1
-   dpkg -i /tmp/percona-release_0.1-5.$(lsb_release -sc)_all.deb >> ${logdir}/main.log  2>&1
-   if [[ $? -ne 0 ]]; then
-      _failed=true
-   fi
-   if $_failed ; then
-      echo_failed
-      install_additional_debian_packages=false
-      error "Install Percona apt repository failed!"
+   if [[ "$MYSQL_DISTRIBUTION" = "Percona" ]] ; then
+      echo "" >> ${logdir}/main.log
+      echo "## - Install Percona apt repository .." >> ${logdir}/main.log
+      echo "## -" >> ${logdir}/main.log
+      echo "wget -O /tmp/percona-release_0.1-5.$(lsb_release -sc)_all.deb https://repo.percona.com/apt/percona-release_0.1-5.$(lsb_release -sc)_all.deb" >> ${logdir}/main.log
+      wget -O /tmp/percona-release_0.1-5.$(lsb_release -sc)_all.deb https://repo.percona.com/apt/percona-release_0.1-5.$(lsb_release -sc)_all.deb >> ${logdir}/main.log  2>&1
+      if [[ $? -ne 0 ]]; then
+         _failed=true
+      fi
+      echo "dpkg -i /tmp/percona-release_0.1-5.$(lsb_release -sc)_all.deb" >> ${logdir}/main.log  2>&1
+      dpkg -i /tmp/percona-release_0.1-5.$(lsb_release -sc)_all.deb >> ${logdir}/main.log  2>&1
+      if [[ $? -ne 0 ]]; then
+         _failed=true
+      fi
+      if $_failed ; then
+         echo_failed
+         install_additional_debian_packages=false
+         error "Install Percona apt repository failed!"
+      else
+         echo_ok
+      fi
    else
-      echo_ok
+      echo_skipped
    fi
    
 
@@ -4209,6 +4213,12 @@ innodb-file-per-table = 1
 ## -
 ## - Default: 8388608 (8M)
 ## -
+## - Note !!
+## -    innodb_additional_mem_pool_size is deprected since version 5.6.3
+## -    innodb_additional_mem_pool_size is removed since version 5.7
+## -
+## -    innodb_additional_mem_pool_size is also removed on MariaDB 10.3.x
+## -
 #innodb-additional-mem-pool-size = 20M
 #innodb-additional-mem-pool-size = 40M