diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index da89c8ae..6b407734 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -19,7 +19,7 @@ jobs:
        mariadb:
           image: mariadb:latest
           ports:
-            - 3306:3306
+            - 3306
           env:
             MYSQL_USER: user
             MYSQL_PASSWORD: password
@@ -52,6 +52,7 @@ jobs:
         MYSQL_HOST: localhost
         MYSQL_USER: user
         MYSQL_PASSWORD: password
+        MYSQL_PORT: ${{ job.services.mariadb.ports[3306] }}
         MYSQL_DATABASE: pigalelry_test
         PORT: 35000
         CI: true