diff --git a/include/uapi/linux/magic.h b/include/uapi/linux/magic.h
index 1a6fee974116..d72347947304 100644
--- a/include/uapi/linux/magic.h
+++ b/include/uapi/linux/magic.h
@@ -56,6 +56,8 @@
 #define REISER2FS_SUPER_MAGIC_STRING	"ReIsEr2Fs"
 #define REISER2FS_JR_SUPER_MAGIC_STRING	"ReIsEr3Fs"
 
+#define SDCARDFS_SUPER_MAGIC	0x5dca2df5
+
 #define SMB_SUPER_MAGIC		0x517B
 #define CGROUP_SUPER_MAGIC	0x27e0eb
 #define CGROUP2_SUPER_MAGIC	0x63677270