diff --git apps/s3dvt/main.c apps/s3dvt/main.c
index 0842e22..9fd6d8e 100644
--- apps/s3dvt/main.c
+++ apps/s3dvt/main.c
@@ -166,8 +166,10 @@ static int pty_init_terminal(void)
 			printf("Error opening tty\n");
 			return 0;
 		}
-		setuid(uid);
-		setgid(gid);
+      if ( (setgid(getgid()) != 0) || (setuid(getuid()) != 0) ){
+         printf(stderr, "Failed to drop privileges\n");
+         exit(-1);
+      }
 		if (setsid() < 0)
 			printf("ERROR (setsid)\n");
 		/*     tcflush(curpty, TCIOFLUSH); */
@@ -228,8 +230,10 @@ static int pipe_init_terminal(void)
 	pid = fork();
 	if (pid == 0) { /*  the child */
 		char tmpstr[1024];
-		setuid(uid);
-		setgid(gid);
+      if ( (setgid(getgid()) != 0) || (setuid(getuid()) != 0) ){
+         printf(stderr, "Failed to drop privileges\n");
+         exit(-1);
+      }
 		if (setsid() < 0)
 			printf("ERROR (setsid)\n");
 		/*     tcflush(curpty, TCIOFLUSH); */