diff --git a/demo/env/stm32f10x/non_os/components/easyflash/port/ef_port.c b/demo/env/stm32f10x/non_os/components/easyflash/port/ef_port.c
index 1a12f70..d8f16be 100644
--- a/demo/env/stm32f10x/non_os/components/easyflash/port/ef_port.c
+++ b/demo/env/stm32f10x/non_os/components/easyflash/port/ef_port.c
@@ -74,8 +74,6 @@ EfErrCode ef_port_read(uint32_t addr, uint32_t *buf, size_t size) {
     uint8_t *buf_8 = (uint8_t *)buf;
     size_t i;
 
-    EF_ASSERT(addr % 4 == 0);
-
     /*copy from flash to ram */
     for (i = 0; i < size; i++, addr ++, buf_8++) {
         *buf_8 = *(uint8_t *) addr;
@@ -138,8 +136,6 @@ EfErrCode ef_port_write(uint32_t addr, const uint32_t *buf, size_t size) {
     size_t i;
     uint32_t read_data;
 
-    EF_ASSERT(addr % 4 == 0);
-
     FLASH_Unlock();
     FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);
     for (i = 0; i < size; i += 4, buf++, addr += 4) {
diff --git a/demo/env/stm32f10x/non_os_spi_flash/components/easyflash/port/ef_port.c b/demo/env/stm32f10x/non_os_spi_flash/components/easyflash/port/ef_port.c
index 6d6557f..4e12a8d 100644
--- a/demo/env/stm32f10x/non_os_spi_flash/components/easyflash/port/ef_port.c
+++ b/demo/env/stm32f10x/non_os_spi_flash/components/easyflash/port/ef_port.c
@@ -77,8 +77,6 @@ EfErrCode ef_port_read(uint32_t addr, uint32_t *buf, size_t size) {
     EfErrCode result = EF_NO_ERR;
     const sfud_flash *flash = sfud_get_device_table() + SFUD_SST25_DEVICE_INDEX;
 
-    EF_ASSERT(size % 4 == 0);
-
     sfud_read(flash, addr, size, (uint8_t *)buf);
 
     return result;
@@ -126,8 +124,6 @@ EfErrCode ef_port_write(uint32_t addr, const uint32_t *buf, size_t size) {
     sfud_err sfud_result = SFUD_SUCCESS;
     const sfud_flash *flash = sfud_get_device_table() + SFUD_SST25_DEVICE_INDEX;
 
-    EF_ASSERT(size % 4 == 0);
-
     sfud_result = sfud_write(flash, addr, size, (const uint8_t *)buf);
 
     if(sfud_result != SFUD_SUCCESS) {
diff --git a/demo/env/stm32f10x/rtt/components/easyflash/port/ef_port.c b/demo/env/stm32f10x/rtt/components/easyflash/port/ef_port.c
index 2f404be..8f17ad9 100644
--- a/demo/env/stm32f10x/rtt/components/easyflash/port/ef_port.c
+++ b/demo/env/stm32f10x/rtt/components/easyflash/port/ef_port.c
@@ -77,8 +77,6 @@ EfErrCode ef_port_read(uint32_t addr, uint32_t *buf, size_t size) {
     uint8_t *buf_8 = (uint8_t *)buf;
     size_t i;
 
-    EF_ASSERT(addr % 4 == 0);
-
     /*copy from flash to ram */
     for (i = 0; i < size; i++, addr ++, buf_8++) {
         *buf_8 = *(uint8_t *) addr;
@@ -141,8 +139,6 @@ EfErrCode ef_port_write(uint32_t addr, const uint32_t *buf, size_t size) {
     size_t i;
     uint32_t read_data;
 
-    EF_ASSERT(addr % 4 == 0);
-
     FLASH_Unlock();
     FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);
     for (i = 0; i < size; i += 4, buf++, addr += 4) {