diff --git a/lib/Support/Makefile b/lib/Support/Makefile
index 2e4a5b066aa..151f253165b 100644
--- a/lib/Support/Makefile
+++ b/lib/Support/Makefile
@@ -7,6 +7,7 @@
 # 
 ##===----------------------------------------------------------------------===##
 LEVEL = ../..
+PARALLEL_DIRS=bzip2
 LIBRARYNAME = LLVMSupport
 BUILD_ARCHIVE = 1