diff --git a/src/TableBrowser.h b/src/TableBrowser.h
index e6164410..2d5d3cc1 100644
--- a/src/TableBrowser.h
+++ b/src/TableBrowser.h
@@ -9,6 +9,7 @@
 #include <QModelIndex>
 #include <QWidget>
 
+#include <functional>
 #include <unordered_set>
 
 class DBBrowserDB;