Index: src/SmtpClient.cc
===================================================================
--- src/SmtpClient.cc	(revision 4996)
+++ src/SmtpClient.cc	(working copy)
@@ -22,6 +22,7 @@
 
 #include <syslog.h>
 #include <unistd.h>
+#include <stdio.h>
 
 #ifdef __OpenBSD__
 // Is this really needed?