diff --git a/src/barebox-state.c b/src/barebox-state.c
index ea4c2e8..6caa004 100644
--- a/src/barebox-state.c
+++ b/src/barebox-state.c
@@ -847,7 +847,7 @@
 {
 	int fd, ret;
 
-	fd = open(path, O_RDWR);
+	fd = open(path, O_RDONLY);
 	if (fd < 0)
 		return fd;