diff --git a/src/yunohost/data_migrations/0005_postgresql_9p4_to_9p6.py b/src/yunohost/data_migrations/0005_postgresql_9p4_to_9p6.py
index c4a6e7f34..5ae729b60 100644
--- a/src/yunohost/data_migrations/0005_postgresql_9p4_to_9p6.py
+++ b/src/yunohost/data_migrations/0005_postgresql_9p4_to_9p6.py
@@ -38,6 +38,6 @@ class MyMigration(Migration):
 
     def package_is_installed(self, package_name):
 
-        p = subprocess.Popen("dpkg --list | grep -q -w {}".format(package_name), shell=True)
+        p = subprocess.Popen("dpkg --list | grep '^ii ' | grep -q -w {}".format(package_name), shell=True)
         p.communicate()
         return p.returncode == 0