diff --git a/Makefile b/Makefile
index 8e99259..384c1e4 100644
--- a/Makefile
+++ b/Makefile
@@ -1021,6 +1021,10 @@
         $(info DRTM_SUPPORT is an experimental feature)
 endif
 
+ifeq (${HOB_LIST},1)
+        $(warning HOB_LIST is an experimental feature)
+endif
+
 ifeq (${TRANSFER_LIST},1)
         $(info TRANSFER_LIST is an experimental feature)
 endif
@@ -1234,6 +1238,7 @@
 	PLATFORM_REPORT_CTX_MEM_USE \
 	EARLY_CONSOLE \
 	PRESERVE_DSU_PMU_REGS \
+	HOB_LIST \
 )))
 
 # Numeric_Flags
@@ -1451,6 +1456,7 @@
 	PLATFORM_REPORT_CTX_MEM_USE \
 	EARLY_CONSOLE \
 	PRESERVE_DSU_PMU_REGS \
+	HOB_LIST \
 )))
 
 ifeq (${PLATFORM_REPORT_CTX_MEM_USE}, 1)