1 files changed, 1 insertions, 1 deletions
diff --git a/src/qt/clientmodel.h b/src/qt/clientmodel.h
index 846691c0c0..1c8116738d 100644
--- a/src/qt/clientmodel.h
+++ b/src/qt/clientmodel.h
@@ -61,7 +61,7 @@ public:
     //! Return number of connections, default is in- and outbound (total)
     int getNumConnections(unsigned int flags = CONNECTIONS_ALL) const;
     int getNumBlocks() const;
-    uint256 getBestBlockHash();
+    uint256 getBestBlockHash() EXCLUSIVE_LOCKS_REQUIRED(!m_cached_tip_mutex);
     int getHeaderTipHeight() const;
     int64_t getHeaderTipTime() const;