diff --git a/src/checkqueue.h b/src/checkqueue.h
index f8b288c10a6..f3c126e2624 100644
--- a/src/checkqueue.h
+++ b/src/checkqueue.h
@@ -13,9 +13,6 @@
 #include <iterator>
 #include <vector>
 
-template <typename T>
-class CCheckQueueControl;
-
 /**
  * Queue for verifications that have to be performed.
   * The verifications are represented by a type T, which must provide an