diff --git a/src/fe-gtk/joind.c b/src/fe-gtk/joind.c
index 1a8746f3..dea9ce11 100644
--- a/src/fe-gtk/joind.c
+++ b/src/fe-gtk/joind.c
@@ -16,6 +16,7 @@
 #include <unistd.h>
 #endif
 
+#include <gtk/gtk.h>
 #include <gtk/gtkbbox.h>
 #include <gtk/gtkbutton.h>
 #include <gtk/gtkdialog.h>