diff --git a/test/units/TEST-04-JOURNAL.LogFilterPatterns.sh b/test/units/TEST-04-JOURNAL.LogFilterPatterns.sh
index 79482d6078..277e367b32 100755
--- a/test/units/TEST-04-JOURNAL.LogFilterPatterns.sh
+++ b/test/units/TEST-04-JOURNAL.LogFilterPatterns.sh
@@ -36,6 +36,7 @@ run_service_and_fetch_logs() {
     fi
 
     systemctl start "$unit"
+    journalctl --sync
     journalctl -q -u "$unit" -I -p notice
 }