[Minor] Silence warning

diff --git a/src/libserver/protocol.c b/src/libserver/protocol.c
index 32f4bb02b9dd65186bef29097e7b48e5814bbffa..3b511971e0d865d8b13555685697184f2c506b6f 100644 (file)
--- a/src/libserver/protocol.c
+++ b/src/libserver/protocol.c
@@ -25,6 +25,7 @@
 #include "email_addr.h"
 #include "worker_private.h"
 #include "cryptobox.h"
+#include <math.h>
 
 /* Max line size */
 #define OUTBUFSIZ BUFSIZ