diff --git a/src/chatviewcommon.cpp b/src/chatviewcommon.cpp
index 8308c982e..8531ea5b0 100644
--- a/src/chatviewcommon.cpp
+++ b/src/chatviewcommon.cpp
@@ -23,6 +23,7 @@
 
 #include <QApplication>
 #include <QRegularExpression>
+#include <QSet>
 #include <QWidget>
 #include <math.h>