diff --git a/lisc/Makefile b/lisc/Makefile
index 40c3d50..8386094 100644
--- a/lisc/Makefile
+++ b/lisc/Makefile
@@ -12,4 +12,4 @@ $(OBJ): lisc.h
 clean:
 	rm -f $(BIN) $(OBJ)
 syndoc:
-	unison doc ssh://qcar@h/data/d/ssa-doc
+	unison -auto doc ssh://qcar@h/data/d/ssa-doc