diff --git a/src/switch_rtp.c b/src/switch_rtp.c
index 9c42520ff9..c4030148aa 100644
--- a/src/switch_rtp.c
+++ b/src/switch_rtp.c
@@ -73,7 +73,11 @@ typedef srtp_hdr_t rtp_hdr_t;
 #ifdef ENABLE_ZRTP
 #include "zrtp.h"
 static zrtp_global_t *zrtp_global;
+#ifndef WIN32
 static zrtp_zid_t zid = { "FreeSWITCH01" };
+#else
+static zrtp_zid_t zid = { "FreeSWITCH0\0" };
+#endif
 static int zrtp_on = 0;
 #define ZRTP_MITM_TRIES 100
 #endif