diff --git a/tools/opt/Makefile b/tools/opt/Makefile
index 073cc0e527e..8a7fec4bfcb 100644
--- a/tools/opt/Makefile
+++ b/tools/opt/Makefile
@@ -1,7 +1,7 @@
 LEVEL = ../..
 TOOLNAME = opt
 USEDLIBS = bcreader bcwriter asmwriter instrument profpaths scalaropts \
-           ipo ipa target analysis transforms vmcore support
+           ipo ipa datastructure target analysis transforms vmcore support
 
 include $(LEVEL)/Makefile.common