diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index 98fac848..3a3a4c6 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -71,7 +71,7 @@
 # Update machine cpu and platform symlinks if something which affects
 # them changed.
 
-$(archinc)/.platform: $(wildcard include/config/arch/*.h) include/config/MARKER
+$(archinc)/.platform: $(wildcard include/config/arch/*.h) include/config/auto.conf
 	@echo '  SYMLINK $(archinc)/xtensa/config -> $(archinc)/xtensa/config-$(CPU)'
 	$(Q)mkdir -p $(archinc)
 	$(Q)mkdir -p $(archinc)/xtensa