diff --git a/boards/xtensa/intel_s1000_crb/Kconfig.defconfig b/boards/xtensa/intel_s1000_crb/Kconfig.defconfig
index 1406848c82c..0f4a4eb4690 100644
--- a/boards/xtensa/intel_s1000_crb/Kconfig.defconfig
+++ b/boards/xtensa/intel_s1000_crb/Kconfig.defconfig
@@ -73,9 +73,6 @@ config SPI_NOR_SECTOR_SIZE
 config SPI_NOR_SECTORS
 	default 1024
 
-config SPI_NOR_BLOCK_SIZE
-	default 65536
-
 choice SPI_NOR_BLOCK_ERASE_SIZE
 	default SPI_NOR_BLOCK_ERASE_64K
 endchoice
diff --git a/drivers/flash/Kconfig.nor b/drivers/flash/Kconfig.nor
index f7f68a99aff..ee9913c5341 100644
--- a/drivers/flash/Kconfig.nor
+++ b/drivers/flash/Kconfig.nor
@@ -46,12 +46,6 @@ config SPI_NOR_SECTORS
 	This option specifies number of sector present
 	in SPI flash
 
-config SPI_NOR_BLOCK_SIZE
-	int "Block size of SPI flash"
-	default 0
-	help
-	This option specifies block size of SPI flash
-
 choice SPI_NOR_BLOCK_ERASE_SIZE
 prompt "Select Block size for erasing"
 
diff --git a/drivers/flash/spi_nor.c b/drivers/flash/spi_nor.c
index e1db70bb8fc..c0fd6c33467 100644
--- a/drivers/flash/spi_nor.c
+++ b/drivers/flash/spi_nor.c
@@ -397,8 +397,7 @@ static const struct flash_driver_api spi_nor_api = {
 static const struct spi_nor_config flash_id = {
 	JEDEC_ID(CONFIG_SPI_NOR_JEDEC_ID),
 	CONFIG_SPI_NOR_PAGE_SIZE, CONFIG_SPI_NOR_SECTOR_SIZE,
-	CONFIG_SPI_NOR_SECTORS, CONFIG_SPI_NOR_BLOCK_SIZE,
-	CONFIG_SPI_NOR_BLOCK_ERASE_SIZE,
+	CONFIG_SPI_NOR_SECTORS, CONFIG_SPI_NOR_BLOCK_ERASE_SIZE,
 };
 
 static struct spi_nor_data spi_nor_memory_data;
diff --git a/drivers/flash/spi_nor.h b/drivers/flash/spi_nor.h
index 434b0095990..33e8c0c0228 100644
--- a/drivers/flash/spi_nor.h
+++ b/drivers/flash/spi_nor.h
@@ -16,7 +16,6 @@ struct spi_nor_config {
 	u32_t page_size;
 	u32_t sector_size;
 	u32_t n_sectors;
-	u32_t block_size;
 	u32_t flag;
 };