diff --git a/targets/TARGET_STM/TARGET_STM32F0/TARGET_NUCLEO_F070RB/device/TOOLCHAIN_GCC_ARM/startup_stm32f070xb.S b/targets/TARGET_STM/TARGET_STM32F0/TARGET_NUCLEO_F070RB/device/TOOLCHAIN_GCC_ARM/startup_stm32f070xb.S
index 1eb0929c1d..16ce3d8edb 100644
--- a/targets/TARGET_STM/TARGET_STM32F0/TARGET_NUCLEO_F070RB/device/TOOLCHAIN_GCC_ARM/startup_stm32f070xb.S
+++ b/targets/TARGET_STM/TARGET_STM32F0/TARGET_NUCLEO_F070RB/device/TOOLCHAIN_GCC_ARM/startup_stm32f070xb.S
@@ -92,7 +92,7 @@ CopyDataInit:
   adds r3, r3, #4
 
 LoopCopyDataInit:
-  // do {...} while (_sdata + r3 < _edata)
+  // while (_sdata + r3 < _edata)
   adds r4, r0, r3
   // if (r4 < r1) branch to CopyDataInit
   cmp r4, r1