diff -Nru a/k3dsdk/ngui/utility.cpp b/k3dsdk/ngui/utility.cpp
--- a/k3dsdk/ngui/utility.cpp	2015-11-07 14:00:59.000000000 +0100
+++ b/k3dsdk/ngui/utility.cpp	2016-09-16 19:42:54.642202151 +0200
@@ -26,6 +26,7 @@
 #include <k3dsdk/signal_system.h>
 
 #include <gdkmm/pixbuf.h>
+#include <glibmm/main.h>
 #include <gtkmm/main.h>
 
 namespace k3d