diff --git a/make/rules.mk b/make/rules.mk
index 5b14e9d1..d7d8daca 100644
--- a/make/rules.mk
+++ b/make/rules.mk
@@ -161,6 +161,7 @@ echo-mk:
 echo-prereq:
 	@echo PREREQ_BUILD      = $(sort $(PREREQ_BUILD))
 	@echo PREREQ_INSTALL    = $(sort $(PREREQ_INSTALL))
+	@echo PREREQ_RUN        = $(sort $(PREREQ_RUN))
 
 echo-contrib: