diff --git a/components/dfs/filesystems/uffs/src/emu/uffs_fileem_ecc_hw_auto.c b/components/dfs/filesystems/uffs/src/emu/uffs_fileem_ecc_hw_auto.c
index ae86f7f16a600bcbe8d03b40d22d148d445a2f78..31fbb28c95b7781305bff1980eaea6eb744ab976 100644
--- a/components/dfs/filesystems/uffs/src/emu/uffs_fileem_ecc_hw_auto.c
+++ b/components/dfs/filesystems/uffs/src/emu/uffs_fileem_ecc_hw_auto.c
@@ -344,13 +344,13 @@ ext:
 
 
 uffs_FlashOps g_femu_ops_ecc_hw_auto = {
-	femu_hw_auto_InitFlash,				// InitFlash()
-	femu_ReleaseFlash,					// ReleaseFlash()
-	NULL,								// ReadPage()
+	femu_hw_auto_InitFlash,			// InitFlash()
+	femu_ReleaseFlash,			// ReleaseFlash()
+	NULL,					// ReadPage()
 	femu_hw_auto_ReadPageWithLayout,	// ReadPageWithLayout()
-	NULL,								// WritePage()
-	femu_hw_auto_WritePageWithLayout,	// WirtePageWithLayout()
-	NULL,						// IsBadBlock(), let UFFS take care of it.
-	NULL,						// MarkBadBlock(), let UFFS take care of it.
+	NULL,					// WritePage()
+	femu_hw_auto_WritePageWithLayout,	// WritePageWithLayout()
+	NULL,					// IsBadBlock(), let UFFS take care of it.
+	NULL,					// MarkBadBlock(), let UFFS take care of it.
 	femu_EraseBlock,			// EraseBlock()
 };
diff --git a/components/dfs/filesystems/uffs/src/emu/uffs_fileem_ecc_soft.c b/components/dfs/filesystems/uffs/src/emu/uffs_fileem_ecc_soft.c
index f6570661456fa57ed5c693ae0f470410f2a79a7f..0a24c1cf3b69a719587d04874ffabca1d3e644fc 100644
--- a/components/dfs/filesystems/uffs/src/emu/uffs_fileem_ecc_soft.c
+++ b/components/dfs/filesystems/uffs/src/emu/uffs_fileem_ecc_soft.c
@@ -203,10 +203,10 @@ uffs_FlashOps g_femu_ops_ecc_soft = {
 	femu_InitFlash,		// InitFlash()
 	femu_ReleaseFlash,	// ReleaseFlash()
 	femu_ReadPage,		// ReadPage()
-	NULL,				// ReadPageWithLayout
+	NULL,		        // ReadPageWithLayout
 	femu_WritePage,		// WritePage()
-	NULL,				// WirtePageWithLayout
-	NULL,				// IsBadBlock(), let UFFS take care of it.
-	NULL,				// MarkBadBlock(), let UFFS take care of it.
+	NULL,			// WritePageWithLayout
+	NULL,			// IsBadBlock(), let UFFS take care of it.
+	NULL,			// MarkBadBlock(), let UFFS take care of it.
 	femu_EraseBlock,	// EraseBlock()
 };
diff --git a/components/dfs/filesystems/uffs/src/example/flash-interface-example.c b/components/dfs/filesystems/uffs/src/example/flash-interface-example.c
index 9a6e00826218c8f18364216f0ef4408aa58d200e..ff26beb281816d359edfac5741822253e201b308 100644
--- a/components/dfs/filesystems/uffs/src/example/flash-interface-example.c
+++ b/components/dfs/filesystems/uffs/src/example/flash-interface-example.c
@@ -292,11 +292,11 @@ static uffs_FlashOps g_my_nand_ops = {
 	nand_init_flash,	// InitFlash()
 	nand_release_flash,	// ReleaseFlash()
 	nand_read_page,		// ReadPage()
-	NULL,				// ReadPageWithLayout
+	NULL,			// ReadPageWithLayout
 	nand_write_page,	// WritePage()
-	NULL,				// WirtePageWithLayout
-	NULL,				// IsBadBlock(), let UFFS take care of it.
-	NULL,				// MarkBadBlock(), let UFFS take care of it.
+	NULL,			// WritePageWithLayout
+	NULL,			// IsBadBlock(), let UFFS take care of it.
+	NULL,			// MarkBadBlock(), let UFFS take care of it.
 	nand_erase_block,	// EraseBlock()
 };