X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/ff8987a16b5e7f997ef2b6d128259279d99b2a5f..c6f1dc90c0ee615e612d519ab3f1be62752b4f9c:/tools/firmware-utils/src/add_header.c

diff --git a/tools/firmware-utils/src/add_header.c b/tools/firmware-utils/src/add_header.c
index 946068c39..37775c3e0 100644
--- a/tools/firmware-utils/src/add_header.c
+++ b/tools/firmware-utils/src/add_header.c
@@ -122,7 +122,7 @@ int main(int argc, char **argv)
 	memcpy(buf, &header, sizeof(header));
 
 	// write the buf
-	if ((fd = open(argv[3], O_CREAT|O_WRONLY,0644)) < 0
+	if ((fd = open(argv[3], O_CREAT|O_WRONLY|O_TRUNC,0644)) < 0
 	|| write(fd, buf, buflen) != buflen
 	|| close(fd) < 0)
 	{