diff --git a/TESTS/mbed_hal/flash/functional_tests/main.cpp b/TESTS/mbed_hal/flash/functional_tests/main.cpp
index c8bb7fdd105..d9b4b0121c8 100644
--- a/TESTS/mbed_hal/flash/functional_tests/main.cpp
+++ b/TESTS/mbed_hal/flash/functional_tests/main.cpp
@@ -49,6 +49,7 @@ static void erase_range(flash_t *flash, uint32_t addr, uint32_t size)
         TEST_ASSERT_NOT_EQUAL(0, sector_size);
         int32_t ret = flash_erase_sector(flash, addr);
         TEST_ASSERT_EQUAL_INT32(0, ret);
+        addr += sector_size;
         size = size > sector_size ? size - sector_size : 0;
     }
 }