diff --git a/util/helper-cairo.hh b/util/helper-cairo.hh
index c80872944..544e1851f 100644
--- a/util/helper-cairo.hh
+++ b/util/helper-cairo.hh
@@ -33,6 +33,7 @@
 #  include "helper-cairo-ft.hh"
 #endif
 
+#include <stdio.h>
 #ifdef HAVE_UNISTD_H
 #include <unistd.h> /* for isatty() */
 #endif