diff --git a/base/heimbase.c b/base/heimbase.c
index 730af195b..f76d056cd 100644
--- a/base/heimbase.c
+++ b/base/heimbase.c
@@ -36,6 +36,10 @@
 #include "baselocl.h"
 #include <syslog.h>
 
+#ifndef HAVE_VASPRINTF
+#include <roken.h>
+#endif
+
 static heim_base_atomic_type tidglobal = HEIM_TID_USER;
 
 struct heim_base {