1 files changed, 1 insertions, 0 deletions
diff --git a/src/knot.cpp b/src/knot.cpp
index 6205af26a..49b4dbb54 100644
--- a/src/knot.cpp
+++ b/src/knot.cpp
@@ -28,6 +28,7 @@
 #include "message-stack.h"
 #include "message-context.h"
 #include "ui/tools/tool-base.h"
+#include <gtk/gtk.h>
 
 using Inkscape::DocumentUndo;