diff --git a/src/libstore/build/worker.hh b/src/libstore/build/worker.hh
index 7d67030d7..33a7bf015 100644
--- a/src/libstore/build/worker.hh
+++ b/src/libstore/build/worker.hh
@@ -59,7 +59,7 @@ struct HookInstance;
 #endif
 
 /**
- * The worker class.
+ * Coordinates one or more realisations and their interdependencies.
  */
 class Worker
 {