diff --git a/meta/Makefile b/meta/Makefile
index 8174a9663..a96a6ecfe 100644
--- a/meta/Makefile
+++ b/meta/Makefile
@@ -126,12 +126,12 @@ saiattrversion.h: $(DEPS) attrversion.sh
 saimetadatasize.h: $(DEPS)
 	./size.sh
 
-saimetadatatest.c saimetadata.c saimetadata.h: xml $(XMLDEPS) parse.pl $(CONSTHEADERS) $(EXTRA) saiattrversion.h
+saimetadatatest.c saimetadata.c saimetadata.h &: xml $(XMLDEPS) parse.pl $(CONSTHEADERS) $(EXTRA) saiattrversion.h
 	perl -I. parse.pl
 
 RPC_MODULES=$(shell find rpc -type f -name "*.pm")
 
-sai.thrift sai_rpc_server.cpp sai_adapter.py: xml $(XMLDEPS) gensairpc.pl templates/*.tt $(RPC_MODULES)
+sai.thrift sai_rpc_server.cpp sai_adapter.py &: xml $(XMLDEPS) gensairpc.pl templates/*.tt $(RPC_MODULES)
 	perl -Irpc gensairpc.pl $(GEN_SAIRPC_OPTS)
 
 rpc: sai.thrift sai_rpc_server.cpp sai_adapter.py