diff --git a/bmspy-server.service b/bmspy-server.service
index 99b71a9..2b5d2db 100644
--- a/bmspy-server.service
+++ b/bmspy-server.service
@@ -1,5 +1,8 @@
 [Unit]
 Description=Make BMS data available for consumers
+# Wait for the Bluetooth service if this boot starts it. On a host with no
+# adapter, systemd skips that service, and this unit starts with no wait.
+After=bluetooth.service
 
 [Service]
 Type=exec