--- src/socket.c
+++ src/socket.c
@@ -51,7 +51,7 @@
 		return 1;
 	}
 
-	fp = fdopen(fd, "r+");
+	fp = fdopen(fd, "a+");
 	/* Communication takes place in accordance with TCPMUX
 	   protocol (RFC 1078).  The rule tag is used as service
 	   name. */
@@ -60,7 +60,7 @@
 	if (!p)
 		logmsg(LOG_ERR, _("%s: TCPMUX did not respond"), rule->tag);
 	else if (*p == '+') 
-		fprintf(fp, "%s %s\r\n", req->pw->pw_name, req->cmdline);
+		fprintf(fp, "%s %s\n", req->pw->pw_name, req->cmdline);
 	else
 		logmsg(LOG_ERR, _("%s: TCPMUX returned %s"), rule->tag, p);
 	fflush(fp);