diff --git a/cockatrice/src/game/deckview/deck_view.cpp b/cockatrice/src/game/deckview/deck_view.cpp
index 241a07395..5d1e5a158 100644
--- a/cockatrice/src/game/deckview/deck_view.cpp
+++ b/cockatrice/src/game/deckview/deck_view.cpp
@@ -8,6 +8,7 @@
 #include <QApplication>
 #include <QGraphicsSceneMouseEvent>
 #include <QMouseEvent>
+#include <QtMath>
 #include <algorithm>
 
 DeckViewCardDragItem::DeckViewCardDragItem(DeckViewCard *_item,