diff --git a/src/qt/clientmodel.cpp b/src/qt/clientmodel.cpp
--- a/src/qt/clientmodel.cpp
+++ b/src/qt/clientmodel.cpp
@@ -27,8 +27,6 @@
 
 #include <cstdint>
 
-class CBlockIndex;
-
 static int64_t nLastHeaderTipUpdateNotification = 0;
 static int64_t nLastBlockTipUpdateNotification = 0;