diff --git a/testing/ltp/Makefile b/testing/ltp/Makefile
index f88658a9e..cfc26e198 100644
--- a/testing/ltp/Makefile
+++ b/testing/ltp/Makefile
@@ -109,6 +109,8 @@ $(LTP_UNPACK):
 	$(Q) echo "git clone $(LTP_URL)"
 	$(Q) git clone $(LTP_URL)
 
+$(LTP_CSRCS): $(LTP_UNPACK)
+
 context:: $(LTP_UNPACK)
 
 distclean::