diff --git a/packages/router/src/router.ts b/packages/router/src/router.ts
index f67a6c9a14..8c7a01f100 100644
--- a/packages/router/src/router.ts
+++ b/packages/router/src/router.ts
@@ -1027,7 +1027,10 @@ export class Router {
     return this.serializeUrl(this.currentUrlTree);
   }
 
-  /** The current Navigation object if one exists */
+  /**
+   * Returns the current `Navigation` object when the router is navigating,
+   * and `null` when idle.
+   */
   getCurrentNavigation(): Navigation|null {
     return this.currentNavigation;
   }