diff --git a/makefiles/info-global.inc.mk b/makefiles/info-global.inc.mk
index 950a111909..239b119136 100644
--- a/makefiles/info-global.inc.mk
+++ b/makefiles/info-global.inc.mk
@@ -43,6 +43,8 @@ define board_unsatisfied_features
   # Some are sometime set as `?=`
   undefine CPU
   undefine CPU_MODEL
+  undefine CPU_ARCH
+  undefine CPU_FAM
 
   # Replicate Makefile.include handling that sets BOARDSDIR to RIOTBOARD
   # when BOARD is not found in BOARDSDIR