diff --git a/docker/Dockerfile b/docker/Dockerfile
index cdd822f6f..8c1e16210 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -31,6 +31,7 @@ ENV \
     CASSANDRA_USER=mon_persister \
     CASSANDRA_PASSWORD=password \
     MYSQL_HOST=mysql \
+    MYSQL_PORT=3306 \
     MYSQL_USER=monapi \
     MYSQL_PASSWORD=password \
     MYSQL_DB=mon \
diff --git a/docker/monasca-api.conf.j2 b/docker/monasca-api.conf.j2
index 0d1be8a62..e477efc60 100644
--- a/docker/monasca-api.conf.j2
+++ b/docker/monasca-api.conf.j2
@@ -216,7 +216,7 @@ password = {{ CASSANDRA_PASSWORD }}
 # Deprecated group/name - [DATABASE]/sql_connection
 # Deprecated group/name - [sql]/connection
 {% if not ( API_MYSQL_DISABLED is defined and API_MYSQL_DISABLED | lower == 'true' ) %}
-connection = "mysql+pymysql://{{ MYSQL_USER }}:{{ MYSQL_PASSWORD }}@{{ MYSQL_HOST }}/{{ MYSQL_DB }}"
+connection = "mysql+pymysql://{{ MYSQL_USER }}:{{ MYSQL_PASSWORD }}@{{ MYSQL_HOST }}:{{ MYSQL_PORT | default('3306') }}/{{ MYSQL_DB }}"
 {% endif %}