diff --git a/firmware/Makefile b/firmware/Makefile
index 10028ac..809a526 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -136,7 +136,7 @@
 		| $(objtree)/$$(dir %)
 	$(call cmd,fwbin,$(patsubst %.gen.S,%,$@))
 $(patsubst %,$(obj)/%.gen.S, $(fw-external-y)): %: $(wordsize_deps) \
-		include/config/builtin/firmware/dir.h | $(objtree)/$$(dir %)
+		include/config/extra/firmware/dir.h | $(objtree)/$$(dir %)
 	$(call cmd,fwbin,$(fwabs)/$(patsubst $(obj)/%.gen.S,%,$@))
 
 # The .o files depend on the binaries directly; the .S files don't.