diff -u openssh-3.9p1_sftp/sftp-server.c openssh-3.9p1_sftp/sftp-server.c
--- openssh-3.9p1_sftp/sftp-server.c	2004-08-19 10:18:56.798255984 +0000
+++ openssh-3.9p1_sftp/sftp-server.c	2004-08-19 10:18:56.798255984 +0000
@@ -1138,12 +1138,12 @@
 	handle_init();
 
 	/* Transaction logging */
-
+	if ((char *)getenv("LOG_SFTP") != NULL)
 	if (atoi(getenv("LOG_SFTP")) == 1)
 	{
 		permit_logging = 1;
-		log_init("sftp-server", atoi(getenv("SFTP_LOG_LEVEL")),
-			atoi(getenv("SFTP_LOG_FACILITY")), 0);
+		log_init("sftp-server", ((char *)getenv("SFTP_LOG_LEVEL") == NULL) ? 0 : atoi(getenv("SFTP_LOG_LEVEL")),
+			((char *)getenv("SFTP_LOG_FACILITY") == NULL) ? 0 : atoi(getenv("SFTP_LOG_FACILITY")), 0);
 	};
 
 
@@ -1178,7 +1178,7 @@
 		if ( permit_logging == 1 )
                 logit("client is not permitted to chmod.");
 	};
-        if (atoi(getenv("SFTP_PERMIT_CHOWN")) != 1) {
+       if ((char *)(getenv("SFTP_PERMIT_CHOWN")) != NULL) if (atoi(getenv("SFTP_PERMIT_CHOWN")) != 1) {
 		permit_chown = 0;
 		if ( permit_logging == 1 )
                 logit("client is not permitted to chown.");