diff --git a/src/slic3r/Utils/Process.hpp b/src/slic3r/Utils/Process.hpp
index 9a3fc65e9..494b222eb 100644
--- a/src/slic3r/Utils/Process.hpp
+++ b/src/slic3r/Utils/Process.hpp
@@ -1,6 +1,9 @@
 #ifndef GUI_PROCESS_HPP
 #define GUI_PROCESS_HPP
 
+#include <vector>
+
+
 class wxWindow;
 class wxString;