diff --git a/src/terminal/draw.h b/src/terminal/draw.h
index abb3d06b..609567c2 100644
--- a/src/terminal/draw.h
+++ b/src/terminal/draw.h
@@ -59,6 +59,8 @@ struct screen_char {
 	/** Attributes are ::screen_char_attr bits. */
 	unsigned char attr;
 
+	unsigned int is_node:1;
+
 	union {
 		/** The fore- and background color. */
 		unsigned char color[SCREEN_COLOR_SIZE];