diff --git a/src/slic3r/GUI/Mouse3DController.hpp b/src/slic3r/GUI/Mouse3DController.hpp
index 99c5511a51..5d6b5ba8cf 100644
--- a/src/slic3r/GUI/Mouse3DController.hpp
+++ b/src/slic3r/GUI/Mouse3DController.hpp
@@ -12,6 +12,7 @@
 #include <thread>
 #include <vector>
 #include <chrono>
+#include <condition_variable>
 
 #include <tbb/mutex.h>