diff --git a/include/coreinit/filesystem.h b/include/coreinit/filesystem.h
index 3c340991..101363c3 100644
--- a/include/coreinit/filesystem.h
+++ b/include/coreinit/filesystem.h
@@ -192,8 +192,8 @@ typedef enum FSMediaState
 
 typedef enum FSMountSourceType
 {
-   FS_MOUNT_SOURCE_SD  = 0,
-   FS_MOUNT_SOURCE_UNK = 1,
+   FS_MOUNT_SOURCE_SD   = 0,
+   FS_MOUNT_SOURCE_PCFS = 1,
 } FSMountSourceType;
 
 typedef enum FSOpenFileFlags