diff --git a/gtk/gtknotebook.c b/gtk/gtknotebook.c
index 443103a118..2b3e3f6bb1 100644
--- a/gtk/gtknotebook.c
+++ b/gtk/gtknotebook.c
@@ -34,6 +34,7 @@
 #include "gtkbutton.h"
 #include "gtkcssstylepropertyprivate.h"
 #include "gtkdragdest.h"
+#include "gtkdragicon.h"
 #include "gtkeventcontrollermotion.h"
 #include "gtkgestureclick.h"
 #include "gtkgizmoprivate.h"