diff --git a/TESTS/mbed_hal/flash/functional_tests/main.cpp b/TESTS/mbed_hal/flash/functional_tests/main.cpp
index 8ca81ecb8b..bbcf85c779 100644
--- a/TESTS/mbed_hal/flash/functional_tests/main.cpp
+++ b/TESTS/mbed_hal/flash/functional_tests/main.cpp
@@ -29,12 +29,7 @@ using namespace utest::v1;
 
 #define TEST_CYCLES         10000000
 
-#ifdef TARGET_NRF52
-/* The increased tolerance is to account for the imprecise timers on the NRF52. */
-#define ALLOWED_DRIFT_PPM   (1000000/50000)   //5.0%
-#else
 #define ALLOWED_DRIFT_PPM   (1000000/5000)    //0.5%
-#endif
 
 /*
     return values to be checked are documented at: