diff --git a/harmony/src/modules/okd/crd/nmstate.rs b/harmony/src/modules/okd/crd/nmstate.rs
index b6117fd..9506882 100644
--- a/harmony/src/modules/okd/crd/nmstate.rs
+++ b/harmony/src/modules/okd/crd/nmstate.rs
@@ -240,7 +240,7 @@ pub struct OvsPortSpec {
 #[derive(Deserialize, Serialize, Clone, Debug, Default, JsonSchema)]
 #[serde(rename_all = "kebab-case")]
 pub struct EthtoolSpec {
-    // FIXME: Properly describe this spec
+    // FIXME: Properly describe this spec (https://nmstate.io/devel/yaml_api.html#ethtool)
 }
 
 #[derive(Deserialize, Serialize, Clone, Debug, Default, JsonSchema)]