diff --git a/src/App/Material.h b/src/App/Material.h
index b0d1cf926e..90d44b070b 100644
--- a/src/App/Material.h
+++ b/src/App/Material.h
@@ -30,6 +30,7 @@
 
 #include <sstream>
 #include <iomanip>
+#include <FCGlobal.h>
 
 namespace App
 {