diff --git a/xtrn/sbl/sbl.c b/xtrn/sbl/sbl.c
index 91f413c9981ee87a29edff5a3403471d035f8e92..e1d5a860adf56b052fe94d1d6108eb023efe84e1 100644
--- a/xtrn/sbl/sbl.c
+++ b/xtrn/sbl/sbl.c
@@ -205,6 +205,12 @@ unsigned _stklen=16000; 		  /* Set stack size in code, not header */
 #define Y2K_2DIGIT_WINDOW	70
 #define VERIFICATION_MOD	FALSE
 
+#ifndef __16BIT__	/* Sockets */
+
+extern SOCKET client_socket;
+
+#endif
+
 typedef struct {
 
 	char	str[32];