diff --git a/podman_compose.py b/podman_compose.py
index ad82e6c..d77e734 100755
--- a/podman_compose.py
+++ b/podman_compose.py
@@ -1529,7 +1529,7 @@ class PodmanCompose:
             "io.podman.compose.config-hash=" + self.yaml_hash,
             "io.podman.compose.project=" + project_name,
             "io.podman.compose.version=" + __version__,
-            f"PODMAN_SYSTEMD_UNIT=podman-compose@{project_name}",
+            f"PODMAN_SYSTEMD_UNIT=podman-compose@{project_name}.service",
             "com.docker.compose.project=" + project_name,
             "com.docker.compose.project.working_dir=" + dirname,
             "com.docker.compose.project.config_files=" + ",".join(relative_files),