diff --git a/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/TARGET_DISCO_F429ZI/PeripheralPins.c b/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/TARGET_DISCO_F429ZI/PeripheralPins.c
index 1246a75287..0bf60a0d1c 100644
--- a/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/TARGET_DISCO_F429ZI/PeripheralPins.c
+++ b/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/TARGET_DISCO_F429ZI/PeripheralPins.c
@@ -40,7 +40,7 @@
 //
 // - The pins which are connected to other components present on the board have
 //   the comment "Connected to xxx". The pin function may not work properly in this
-//   case. These pins may not displayed on the board pinout image on mbed.org.
+//   case. These pins may not be displayed on the board pinout image on mbed.org.
 //   Please read the board reference manual and schematic for more information.
 //
 //==============================================================================
diff --git a/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/TARGET_NUCLEO_F429ZI/PeripheralPins.c b/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/TARGET_NUCLEO_F429ZI/PeripheralPins.c
index 5af1976b86..68b136a8a5 100644
--- a/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/TARGET_NUCLEO_F429ZI/PeripheralPins.c
+++ b/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/TARGET_NUCLEO_F429ZI/PeripheralPins.c
@@ -40,7 +40,7 @@
 //
 // - The pins which are connected to other components present on the board have
 //   the comment "Connected to xxx". The pin function may not work properly in this
-//   case. These pins may not displayed on the board pinout image on mbed.org.
+//   case. These pins may not be displayed on the board pinout image on mbed.org.
 //   Please read the board reference manual and schematic for more information.
 //
 //==============================================================================