diff --git a/Makefile b/Makefile
index 8787e029e..f2c17d632 100644
--- a/Makefile
+++ b/Makefile
@@ -740,6 +740,7 @@ OBJS += passes/cmds/cover.o
 OBJS += passes/cmds/design.o
 OBJS += passes/cmds/plugin.o
 
+OBJS += passes/cmds/blackbox.o
 OBJS += passes/cmds/check.o
 OBJS += passes/cmds/clean_zerowidth.o
 OBJS += passes/cmds/selectconst.o