diff -r 23d48a709ffc -r 31f4293cec30 src/format.h
--- a/src/format.h	Fri Mar 23 21:53:03 2018 +0200
+++ b/src/format.h	Fri Mar 23 22:00:34 2018 +0200
@@ -23,6 +23,7 @@
 #include "basics.h"
 #include "colors.h"
 #include "types/matrix.h"
+#include "types/vertex.h"
 
 // Converts a given value into a string that can be retrieved with text().
 // Used as the argument type to the formatting functions, hence its name.