diff --git a/bitnami/mariadb/10.3/debian-10/rootfs/opt/bitnami/scripts/libmariadb.sh b/bitnami/mariadb/10.3/debian-10/rootfs/opt/bitnami/scripts/libmariadb.sh
index acb4a8f1aa50..c9d921cf4ab3 100644
--- a/bitnami/mariadb/10.3/debian-10/rootfs/opt/bitnami/scripts/libmariadb.sh
+++ b/bitnami/mariadb/10.3/debian-10/rootfs/opt/bitnami/scripts/libmariadb.sh
@@ -171,8 +171,6 @@ plugin_dir=${DB_BASE_DIR}/lib/plugin
 port=${DB_DEFAULT_PORT_NUMBER}
 socket=${DB_SOCKET_FILE}
 pid_file=${DB_PID_FILE}
-
-!include ${DB_CONF_DIR}/bitnami/my_custom.cnf
 EOF
 }
 
@@ -272,6 +270,9 @@ mysql_initialize() {
         if is_file_writable "${DB_CONF_DIR}/bitnami/my_custom.cnf"; then
             info "Injecting custom configuration 'my_custom.cnf'"
             cat "${DB_CONF_DIR}/my_custom.cnf" > "${DB_CONF_DIR}/bitnami/my_custom.cnf"
+            if ! grep --silent "!include ${DB_CONF_DIR}/bitnami/my_custom.cnf" "${DB_CONF_FILE}"; then
+                echo "!include ${DB_CONF_DIR}/bitnami/my_custom.cnf" >> "${DB_CONF_FILE}"
+            fi
         else
             warn "Could not inject custom configuration for the ${DB_FLAVOR} configuration file '$DB_CONF_DIR/bitnami/my_custom.cnf' because it is not writable."
         fi
diff --git a/bitnami/mariadb/README.md b/bitnami/mariadb/README.md
index 5d40fe715780..a47c40a2caab 100644
--- a/bitnami/mariadb/README.md
+++ b/bitnami/mariadb/README.md
@@ -51,7 +51,7 @@ Learn more about the Bitnami tagging policy and the difference between rolling t
 * [`10.6`, `10.6-debian-10`, `10.6.7`, `10.6.7-debian-10-r70` (10.6/debian-10/Dockerfile)](https://github.com/bitnami/bitnami-docker-mariadb/blob/10.6.7-debian-10-r70/10.6/debian-10/Dockerfile)
 * [`10.5`, `10.5-debian-10`, `10.5.15`, `10.5.15-debian-10-r71` (10.5/debian-10/Dockerfile)](https://github.com/bitnami/bitnami-docker-mariadb/blob/10.5.15-debian-10-r71/10.5/debian-10/Dockerfile)
 * [`10.4`, `10.4-debian-10`, `10.4.24`, `10.4.24-debian-10-r71` (10.4/debian-10/Dockerfile)](https://github.com/bitnami/bitnami-docker-mariadb/blob/10.4.24-debian-10-r71/10.4/debian-10/Dockerfile)
-* [`10.3`, `10.3-debian-10`, `10.3.34`, `10.3.34-debian-10-r72` (10.3/debian-10/Dockerfile)](https://github.com/bitnami/bitnami-docker-mariadb/blob/10.3.34-debian-10-r72/10.3/debian-10/Dockerfile)
+* [`10.3`, `10.3-debian-10`, `10.3.34`, `10.3.34-debian-10-r73` (10.3/debian-10/Dockerfile)](https://github.com/bitnami/bitnami-docker-mariadb/blob/10.3.34-debian-10-r73/10.3/debian-10/Dockerfile)
 * [`10.2`, `10.2-debian-10`, `10.2.43`, `10.2.43-debian-10-r69` (10.2/debian-10/Dockerfile)](https://github.com/bitnami/bitnami-docker-mariadb/blob/10.2.43-debian-10-r69/10.2/debian-10/Dockerfile)
 
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