1 files changed, 2 insertions, 0 deletions
diff --git a/mk.sh b/mk.sh
index 04c2e2ce..80b5ae1d 100644
--- a/mk.sh
+++ b/mk.sh
@@ -7,6 +7,8 @@ classify_source () {
 		echo REFERENCE
 	elif grep -q "^#define ${NAME}[ (]" $1; then
 		echo MACRO
+	elif grep -q "#undef ${NAME}" $1; then
+		echo MACRO
 	elif grep -q "^typedef.* ${NAME}.*;" $1; then
 		echo TYPE
 	elif grep -q "^typedef.*{$" $1; then