diff --git a/expenses_manager/Jenkinsfile b/expenses_manager/Jenkinsfile
index 2465935..84f266f 100644
--- a/expenses_manager/Jenkinsfile
+++ b/expenses_manager/Jenkinsfile
@@ -73,7 +73,7 @@ pipeline {
                             // pytest died before collecting anything produces no XML,
                             // and that must fail rather than pass quietly.
                             junit allowEmptyResults: false,
-                                  testResults: 'expenses_manager/junit.xml'
+                                testResults: 'expenses_manager/junit.xml'
                         }
                     }
                 }
@@ -92,7 +92,7 @@ pipeline {
                                     "rm -rf ${CI_DIR} && mkdir -p ${CI_DIR}"
 
                                 tar -czf - --exclude=./expenses_manager/venv \
-                                           --exclude=./.git . \
+                                        --exclude=./.git . \
                                     | ssh ${SSH_OPTS} ${NAS_USER}@${NAS_HOST} \
                                         "tar -xzf - -C ${CI_DIR}"
 
@@ -119,6 +119,23 @@ pipeline {
                                         -e DB_ENGINE=sqlite3 \
                                         ${IMAGE}:${SHA} python manage.py check"
                             '''
+
+                        // A migrations directory without __init__.py is a namespace
+                        // package, and Django deliberately ignores those: the app then
+                        // appears to have no migrations at all, migrate --check always
+                        // reports nothing pending, and a real migration would silently
+                        // never be applied. This is what .gitignore line 6 caused.
+                        sh '''
+                            SHA=$(echo "${GIT_COMMIT}" | cut -c1-7)
+                            ssh ${SSH_OPTS} ${NAS_USER}@${NAS_HOST} \
+                                "sudo ${NAS_DOCKER} run --rm \
+                                    -e SECRET_KEY=smoke-test-only \
+                                    -e DEBUG=False \
+                                    -e ALLOWED_HOSTS=localhost \
+                                    -e DB_ENGINE=sqlite3 \
+                                    ${IMAGE}:${SHA} python manage.py showmigrations expenses" \
+                                | grep -q '0001_initial'
+                        '''
                         }
                     }
                 }