diff --git a/Makefile b/Makefile
index 6065522a..8afc8f6e 100644
--- a/Makefile
+++ b/Makefile
@@ -585,11 +585,15 @@ manpages:
 
 tags: FORCE
 	@echo "    [TAGS]   $(TAGS_CMD)"
-	$(Q)$(TAGS_CMD) *.[ch] image/*.[ch] convert/*.[ch] mkfs/*.[ch]
+	$(Q)$(TAGS_CMD) *.[ch] image/*.[ch] convert/*.[ch] mkfs/*.[ch] \
+		check/*.[ch] kernel-lib/*.[ch] kernel-shared/*.[ch] \
+		libbtrfsutil/*.[ch]
 
 cscope: FORCE
 	@echo "    [CSCOPE] $(CSCOPE_CMD)"
-	$(Q)ls -1 *.[ch] image/*.[ch] convert/*.[ch] mkfs/*.[ch] > cscope.files
+	$(Q)ls -1 *.[ch] image/*.[ch] convert/*.[ch] mkfs/*.[ch] check/*.[ch] \
+		kernel-lib/*.[ch] kernel-shared/*.[ch] libbtrfsutil/*.[ch] \
+		> cscope.files
 	$(Q)$(CSCOPE_CMD)
 
 clean-all: clean clean-doc clean-gen