--- a/clientloop.c	2017-10-07 04:21:42.000000000 +0200
+++ b/clientloop.c	2017-10-07 04:30:02.000000000 +0200
@@ -301,6 +301,10 @@ client_x11_get_proto(struct ssh *ssh, co
 	struct stat st;
 	u_int now, x11_timeout_real;
 
+#if __APPLE__
+	int is_path_to_socket = 0;
+#endif /* __APPLE__ */
+
 	*_proto = proto;
 	*_data = data;
 	proto[0] = data[0] = xauthfile[0] = xauthdir[0] = '\0';
@@ -317,6 +321,19 @@ client_x11_get_proto(struct ssh *ssh, co
 	}
 
 	if (xauth_path != NULL) {
+#if __APPLE__
+		{
+			/*
+			 * If using launchd socket, remove the screen number from the end
+			 * of $DISPLAY. is_path_to_socket is used later in this function
+			 * to determine if an error should be displayed.
+			 */
+			char path[PATH_MAX];
+
+			is_path_to_socket = is_path_to_xsocket(display, path, sizeof(path));
+		}
+#endif /* __APPLE__ */
+
 		/*
 		 * Handle FamilyLocal case where $DISPLAY does
 		 * not match an authorization entry.  For this we
@@ -428,6 +445,9 @@ client_x11_get_proto(struct ssh *ssh, co
 		u_int8_t rnd[16];
 		u_int i;
 
+#if __APPLE__
+		if (!is_path_to_socket)
+#endif /* __APPLE__ */
 		logit("Warning: No xauth data; "
 		    "using fake authentication data for X11 forwarding.");
 		strlcpy(proto, SSH_X11_PROTO, sizeof proto);
--- a/channels.c	2017-10-07 04:21:42.000000000 +0200
+++ b/channels.c	2017-10-07 04:26:38.000000000 +0200
@@ -4517,7 +4517,7 @@ connect_local_xsocket(u_int dnr)
 }
 
 #ifdef __APPLE__
-static int
+int
 is_path_to_xsocket(const char *display, char *path, size_t pathlen)
 {
 	struct stat sbuf;
--- a/channels.h	2017-10-02 21:34:26.000000000 +0200
+++ b/channels.h	2017-10-07 04:26:24.000000000 +0200
@@ -316,6 +316,9 @@ int	 permitopen_port(const char *);
 /* x11 forwarding */
 
 void	 channel_set_x11_refuse_time(struct ssh *, u_int);
+#ifdef __APPLE__
+int	 is_path_to_xsocket(const char *, char *, size_t);
+#endif
 int	 x11_connect_display(struct ssh *);
 int	 x11_create_display_inet(struct ssh *, int, int, int, u_int *, int **);
 void	 x11_request_forwarding_with_spoofing(struct ssh *, int,