diff --git a/block-raw-posix.c b/block-raw-posix.c
index e314f4ae4cdb522c11a099f2658d830281e47197..833907186ade91acc8adace2eac7c2371fbe156e 100644
--- a/block-raw-posix.c
+++ b/block-raw-posix.c
@@ -1149,6 +1149,11 @@ static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
 }
 #else
 
+static int fd_open(BlockDriverState *bs)
+{
+    return 0;
+}
+
 static int raw_is_inserted(BlockDriverState *bs)
 {
     return 1;