diff --git a/src/qt/clientmodel.cpp b/src/qt/clientmodel.cpp
index a623771aa0..8a4a2955f6 100644
--- a/src/qt/clientmodel.cpp
+++ b/src/qt/clientmodel.cpp
@@ -28,8 +28,6 @@
 #include <QDebug>
 #include <QTimer>
 
-class CBlockIndex;
-
 static int64_t nLastHeaderTipUpdateNotification = 0;
 static int64_t nLastBlockTipUpdateNotification = 0;