diff --git a/src/slic3r/Utils/FlashAir.cpp b/src/slic3r/Utils/FlashAir.cpp
index 2e6a7982d..3fc913c99 100644
--- a/src/slic3r/Utils/FlashAir.cpp
+++ b/src/slic3r/Utils/FlashAir.cpp
@@ -5,6 +5,7 @@
 #include <boost/filesystem/path.hpp>
 #include <boost/format.hpp>
 #include <boost/log/trivial.hpp>
+#include <boost/algorithm/string/predicate.hpp>
 
 #include <wx/frame.h>
 #include <wx/event.h>