diff --git a/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_DISCO_F429ZI/TOOLCHAIN_GCC_ARM/STM32F429ZI.ld b/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_DISCO_F429ZI/TOOLCHAIN_GCC_ARM/STM32F429ZI.ld
index 9d0f75588a..d5a2dbcb05 100644
--- a/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_DISCO_F429ZI/TOOLCHAIN_GCC_ARM/STM32F429ZI.ld
+++ b/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_DISCO_F429ZI/TOOLCHAIN_GCC_ARM/STM32F429ZI.ld
@@ -5,7 +5,7 @@ MEMORY
 { 
   FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048k
   CCM (rwx) : ORIGIN = 0x10000000, LENGTH = 64K
-  RAM (rwx) : ORIGIN = 0x20000188, LENGTH = 192k - 0x188 
+  RAM (rwx) : ORIGIN = 0x200001AC, LENGTH = 192k - 0x1AC 
 }
 
 /* Linker script to place sections and symbol values. Should be used together
diff --git a/libraries/mbed/targets/hal/TARGET_STM/TARGET_DISCO_F429ZI/PeripheralNames.h b/libraries/mbed/targets/hal/TARGET_STM/TARGET_DISCO_F429ZI/PeripheralNames.h
index dd8adb60b5..9e31110885 100644
--- a/libraries/mbed/targets/hal/TARGET_STM/TARGET_DISCO_F429ZI/PeripheralNames.h
+++ b/libraries/mbed/targets/hal/TARGET_STM/TARGET_DISCO_F429ZI/PeripheralNames.h
@@ -58,9 +58,9 @@ typedef enum {
     UART_8 = (int)UART8_BASE
 } UARTName;
 
-#define STDIO_UART_TX  PA_2
-#define STDIO_UART_RX  PA_3
-#define STDIO_UART     UART_2
+#define STDIO_UART_TX  PA_9
+#define STDIO_UART_RX  PA_10
+#define STDIO_UART     UART_1
 
 typedef enum {
     SPI_1 = (int)SPI1_BASE,