diff --git a/core/base_rules.mk b/core/base_rules.mk
index f6497da..7927760 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -75,7 +75,7 @@
 # Only the tags mentioned in this test are expected to be set by module
 # makefiles. Anything else is either a typo or a source of unexpected
 # behaviors.
-ifneq ($(filter-out debug eng tests optional samples shell_ash shell_mksh,$(LOCAL_MODULE_TAGS)),)
+ifneq ($(filter-out debug eng tests optional samples shell_mksh,$(LOCAL_MODULE_TAGS)),)
 $(warning unusual tags $(LOCAL_MODULE_TAGS) on $(LOCAL_MODULE) at $(LOCAL_PATH))
 endif