diff --git a/lib/CodeGen/Makefile b/lib/CodeGen/Makefile
index 62c298d3d29..c37630a79bc 100644
--- a/lib/CodeGen/Makefile
+++ b/lib/CodeGen/Makefile
@@ -1,4 +1,4 @@
 LEVEL = ../..
-DIRS  = InstrSelection InstrSched RegAlloc Mapping
+DIRS  = PreSelection InstrSelection InstrSched RegAlloc Mapping
 
 include $(LEVEL)/Makefile.common