diff --git a/usr.bin/dtc/dtc.cc b/usr.bin/dtc/dtc.cc
index c04f01616805..b7d52921abe8 100644
--- a/usr.bin/dtc/dtc.cc
+++ b/usr.bin/dtc/dtc.cc
@@ -100,7 +100,7 @@ main(int argc, char **argv)
 	clock_t c0 = clock();
 	class device_tree tree;
 	fdt::checking::check_manager checks;
-	const char *options = "hqI:O:o:V:d:R:S:p:b:fisvH:W:E:DP:";
+	const char *options = "hqI:O:o:V:d:R:S:p:b:fi:svH:W:E:DP:";
 
 	// Don't forget to update the man page if any more options are added.
 	while ((ch = getopt(argc, argv, options)) != -1)