diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 695b5d6..110cf24 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -2026,7 +2026,7 @@
 	int opt;
 	int err;
 
-	while ((opt = getopt(argc, argv, "i:I:msSo:awM:K:")) != -1) {
+	while ((opt = getopt(argc, argv, "i:I:cmsSo:awM:K:")) != -1) {
 		switch (opt) {
 		case 'i':
 			kernel_read = optarg;
@@ -2035,6 +2035,9 @@
 			module_read = optarg;
 			external_module = 1;
 			break;
+		case 'c':
+			cross_build = 1;
+			break;
 		case 'm':
 			modversions = 1;
 			break;