diff --git a/tools/opt/Makefile b/tools/opt/Makefile
index 9b1df54b851..184070b326e 100644
--- a/tools/opt/Makefile
+++ b/tools/opt/Makefile
@@ -2,7 +2,7 @@ LEVEL = ../..
 TOOLNAME = opt
 
 USEDLIBS = bcreader bcwriter instrument profpaths scalaropts \
-           ipo ipa datastructure transforms target analysis transformutils vmcore support
+           ipo ipa datastructure transforms target analysis transformutils vmcore support emitfuncs
 
 include $(LEVEL)/Makefile.common