diff --git a/mk/docs.mk b/mk/docs.mk
index 2a5a847d2a4..df25c738daf 100644
--- a/mk/docs.mk
+++ b/mk/docs.mk
@@ -129,21 +129,21 @@ doc/:
 HTML_DEPS += doc/rust.css
 doc/rust.css: $(D)/rust.css | doc/
 	@$(call E, cp: $@)
-	$(Q)cp -a $< $@ 2> /dev/null
+	$(Q)cp -PRp $< $@ 2> /dev/null
 
 HTML_DEPS += doc/favicon.inc
 doc/favicon.inc: $(D)/favicon.inc | doc/
 	@$(call E, cp: $@)
-	$(Q)cp -a $< $@ 2> /dev/null
+	$(Q)cp -PRp $< $@ 2> /dev/null
 
 doc/full-toc.inc: $(D)/full-toc.inc | doc/
 	@$(call E, cp: $@)
-	$(Q)cp -a $< $@ 2> /dev/null
+	$(Q)cp -PRp $< $@ 2> /dev/null
 
 HTML_DEPS += doc/footer.inc
 doc/footer.inc: $(D)/footer.inc | doc/
 	@$(call E, cp: $@)
-	$(Q)cp -a $< $@ 2> /dev/null
+	$(Q)cp -PRp $< $@ 2> /dev/null
 
 # The (english) documentation for each doc item.