diff --git a/src/txmempool.h b/src/txmempool.h
index 6a7bc15973..33ee19a194 100644
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -51,8 +51,6 @@ struct LockPoints
     LockPoints() : height(0), time(0), maxInputBlock(nullptr) { }
 };
 
-class CTxMemPool;
-
 /** \class CTxMemPoolEntry
  *
  * CTxMemPoolEntry stores data about the corresponding transaction, as well