diff --git a/examples/game-of-life-png/life.scm b/examples/game-of-life-png/life.scm
index ea6f25bd..a73e45e9 100644
--- a/examples/game-of-life-png/life.scm
+++ b/examples/game-of-life-png/life.scm
@@ -17,6 +17,8 @@
 ;        (only (example life) life)
 ;        (rename (prefix (example grid) grid-)
 ;                (grid-make make-grid)))
+(include-c-header "stdlib.h")
+(include-c-header "<stdio.h>")
 
 ;; Initialize a grid with a glider.
 ;(define grid (make-grid 24 24))