diff --git a/podman_compose.py b/podman_compose.py
index 866a7e7..3b59858 100755
--- a/podman_compose.py
+++ b/podman_compose.py
@@ -828,6 +828,10 @@ class PodmanCompose:
             print(" ** merged:\n", json.dumps(compose, indent = 2))
         ver = compose.get('version')
         services = compose.get('services')
+        if services is None:
+            services = {}
+            print("WARNING: No services defined")
+		
         # NOTE: maybe add "extends.service" to _deps at this stage
         flat_deps(services, with_extends=True)
         service_names = sorted([ (len(srv["_deps"]), name) for name, srv in services.items() ])
diff --git a/tests/no_services/docker-compose.yaml b/tests/no_services/docker-compose.yaml
new file mode 100644
index 0000000..c5b0194
--- /dev/null
+++ b/tests/no_services/docker-compose.yaml
@@ -0,0 +1,7 @@
+version: '3'
+networks:
+  shared-network:
+    driver: bridge
+    ipam:
+      config:
+          - subnet: 172.19.0.0/24