diff --git a/Makefile b/Makefile
index 487a6fc..2fb4b00 100644
--- a/Makefile
+++ b/Makefile
@@ -11,4 +11,4 @@ sim_output_location:
 	mkdir -p build/sim/
 
 sim: sim_output_location
-	bsc -u -p $(subst $(space):,:,$(SRCDIRS)) src/ESeries.bsv
+	bsc -u -p %/Libraries:$(subst $(space):,:,$(SRCDIRS)) src/ESeries.bsv