diff --git a/libraries/mbed/vendor/Freescale/KL05Z/hal/serial_api.c b/libraries/mbed/vendor/Freescale/KL05Z/hal/serial_api.c
index 8f8c3ab0a8..1cd52eb081 100644
--- a/libraries/mbed/vendor/Freescale/KL05Z/hal/serial_api.c
+++ b/libraries/mbed/vendor/Freescale/KL05Z/hal/serial_api.c
@@ -24,7 +24,7 @@
 #include "pinmap.h"
 #include "error.h"
 
-#define UART_CLOCK_HZ 47972352u
+#define UART_CLOCK_HZ 23986176u
 
 static const PinMap PinMap_UART_TX[] = {
     {PTB1, UART_0, 2},
diff --git a/libraries/tests/mbed/spi_master/main.cpp b/libraries/tests/mbed/spi_master/main.cpp
index 1aed96af33..f2d2a6f4e1 100644
--- a/libraries/tests/mbed/spi_master/main.cpp
+++ b/libraries/tests/mbed/spi_master/main.cpp
@@ -4,6 +4,9 @@
 #if defined(TARGET_KL25Z)
 SPI spi(PTD2, PTD3, PTD1);   // mosi, miso, sclk
 DigitalOut cs(PTA13);
+#elif defined(TARGET_KL05Z)
+SPI spi(PTA7, PTA6, PTB0);   // mosi, miso, sclk
+DigitalOut cs(PTB1);
 #else
 SPI spi(p5, p6, p7); // mosi, miso, sclk
 DigitalOut cs(p8);
@@ -12,7 +15,7 @@ DigitalOut cs(p8);
 int main() {
     int data = 0;
     int res = 0;
-    
+
     for(int i = 0; i < 30; i++) {
 
         cs = 0;