diff --git a/common/JackGenericClientChannel.h b/common/JackGenericClientChannel.h
index c4564ff8..e866feeb 100644
--- a/common/JackGenericClientChannel.h
+++ b/common/JackGenericClientChannel.h
@@ -27,7 +27,6 @@ namespace Jack
 
 struct JackRequest;
 struct JackResult;
-class detail::JackClientRequestInterface;
 
 /*!
 \brief Generic JackClientChannel class.