diff --git a/fs/partitions/osf.c b/fs/partitions/osf.c
index 6e0825efe3ee..9ddca5891278 100644
--- a/fs/partitions/osf.c
+++ b/fs/partitions/osf.c
@@ -10,7 +10,7 @@
 #include "check.h"
 #include "osf.h"
 
-#define MAX_OSF_PARTITIONS 8
+#define MAX_OSF_PARTITIONS 18
 
 int osf_partition(struct parsed_partitions *state, struct block_device *bdev)
 {