diff --git a/sys/bhp/Makefile.dep b/sys/bhp/Makefile.dep
new file mode 100644
index 0000000000..dba0aebbb9
--- /dev/null
+++ b/sys/bhp/Makefile.dep
@@ -0,0 +1,3 @@
+ifneq (,$(filter bhp_event,$(USEMODULE)))
+  USEMODULE += event
+endif