diff --git a/graph-lib/lib/debug-syntax.rkt b/graph-lib/lib/debug-syntax.rkt
index a59f2996..6491855c 100644
--- a/graph-lib/lib/debug-syntax.rkt
+++ b/graph-lib/lib/debug-syntax.rkt
@@ -22,4 +22,5 @@
 ;; Avoid problems with raco test on headless machines (GTK tries to open
 ;; display :0 otherwise)
 (module main racket)
-(module test racket)
\ No newline at end of file
+(module test racket)
+(module doc racket)