diff --git a/Makefile b/Makefile
index 9d1e945..a11e55f 100644
--- a/Makefile
+++ b/Makefile
@@ -971,6 +971,7 @@
         ENABLE_TRBE_FOR_NS \
         ENABLE_SYS_REG_TRACE_FOR_NS \
         ENABLE_TRF_FOR_NS \
+        ENABLE_FEAT_HCX \
 )))
 
 $(eval $(call assert_numerics,\
@@ -1074,6 +1075,7 @@
         ENABLE_TRBE_FOR_NS \
         ENABLE_SYS_REG_TRACE_FOR_NS \
         ENABLE_TRF_FOR_NS \
+        ENABLE_FEAT_HCX \
 )))
 
 ifeq (${SANITIZE_UB},trap)