diff --git a/nixos/modules/virtualisation/podman.nix b/nixos/modules/virtualisation/podman.nix
index 41d50dc73084..6b0871d21a80 100644
--- a/nixos/modules/virtualisation/podman.nix
+++ b/nixos/modules/virtualisation/podman.nix
@@ -100,6 +100,11 @@ in
     # Enable common /etc/containers configuration
     virtualisation.containers.enable = true;
 
+    assertions = [{
+      assertion = cfg.dockerCompat -> !config.virtualisation.docker.enable;
+      message = "Option dockerCompat conflicts with docker";
+    }];
+
   };
 
 }