diff --git a/modules/printbackends/gtkprintbackendlpr.c b/modules/printbackends/gtkprintbackendlpr.c
index f3029e64ae..b4f711632f 100644
--- a/modules/printbackends/gtkprintbackendlpr.c
+++ b/modules/printbackends/gtkprintbackendlpr.c
@@ -33,6 +33,7 @@
 
 #include <gtk/gtk.h>
 #include "gtkprinterprivate.h"
+#include "gtkprivate.h"
 
 #include "gtkprintbackendlpr.h"