diff --git a/components/fatfs/diskio/diskio.c b/components/fatfs/diskio/diskio.c
index b50f34b853..6453a59f8b 100644
--- a/components/fatfs/diskio/diskio.c
+++ b/components/fatfs/diskio/diskio.c
@@ -19,7 +19,7 @@
 static ff_diskio_impl_t * s_impls[FF_VOLUMES] = { NULL };
 
 #if FF_MULTI_PARTITION		/* Multiple partition configuration */
-const PARTITION VolToPart[FF_VOLUMES] = {
+PARTITION VolToPart[FF_VOLUMES] = {
     {0, 0},    /* Logical drive 0 ==> Physical drive 0, auto detection */
 #if FF_VOLUMES > 1
     {1, 0},    /* Logical drive 1 ==> Physical drive 1, auto detection */
diff --git a/components/fatfs/src/ff.h b/components/fatfs/src/ff.h
index 55f6526c37..f4493e031a 100644
--- a/components/fatfs/src/ff.h
+++ b/components/fatfs/src/ff.h
@@ -116,7 +116,7 @@ typedef struct {
 	BYTE pd;	/* Physical drive number */
 	BYTE pt;	/* Partition: 0:Auto detect, 1-4:Forced partition) */
 } PARTITION;
-extern const PARTITION VolToPart[];	/* Volume - Partition mapping table */
+extern PARTITION VolToPart[];	/* Volume - Partition mapping table */
 #endif
 
 #if FF_STR_VOLUME_ID