1 files changed, 1 insertions, 0 deletions
diff --git a/compat.c b/compat.c
index a8bcd480..ba1a83e5 100644
--- a/compat.c
+++ b/compat.c
@@ -53,6 +53,7 @@ void setup_protocol(int f_out,int f_in)
 	if (remote_version < MIN_PROTOCOL_VERSION ||
 	    remote_version > MAX_PROTOCOL_VERSION) {
 		rprintf(FERROR,"protocol version mismatch - is your shell clean?\n");
+		rprintf(FERROR,"(see the rsync man page for an explanation)\n");
 		exit_cleanup(1);
 	}