diff --git a/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32L1/TARGET_MOTE_L152RC/PinNames.h b/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32L1/TARGET_MOTE_L152RC/PinNames.h
index b8ec33bc5f..9b9bb8bea6 100755
--- a/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32L1/TARGET_MOTE_L152RC/PinNames.h
+++ b/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32L1/TARGET_MOTE_L152RC/PinNames.h
@@ -148,9 +148,9 @@ typedef enum {
 
     // Generic signals namings
     LED1        = PB_1,
-    LED2        = PB_7,
-    LED3        = PA_10,
-    //LED4        = PA_5,
+    LED2        = PC_3,
+    LED3        = PB_10,
+    LED4        = PB_10,
     //USER_BUTTON = PC_13,
     SERIAL_TX   = PA_2,
     SERIAL_RX   = PA_3,
diff --git a/libraries/rtos/rtx/TARGET_CORTEX_M/RTX_CM_lib.h b/libraries/rtos/rtx/TARGET_CORTEX_M/RTX_CM_lib.h
index 9ff9cf14b4..292f148e39 100755
--- a/libraries/rtos/rtx/TARGET_CORTEX_M/RTX_CM_lib.h
+++ b/libraries/rtos/rtx/TARGET_CORTEX_M/RTX_CM_lib.h
@@ -340,6 +340,10 @@ osThreadDef_t os_thread_def_main = {(os_pthread)main, osPriorityNormal, 0, NULL}
 #elif defined(TARGET_STM32F469NI)
 #define INITIAL_SP            (0x20050000UL)
 
+#elif defined(TARGET_STM32L152RC)
+#define INITIAL_SP            (0x20008000UL)
+
+
 #else
 #error "no target defined"
 
diff --git a/libraries/rtos/rtx/TARGET_CORTEX_M/RTX_Conf_CM.c b/libraries/rtos/rtx/TARGET_CORTEX_M/RTX_Conf_CM.c
index 01114a4b34..14bcf29989 100755
--- a/libraries/rtos/rtx/TARGET_CORTEX_M/RTX_Conf_CM.c
+++ b/libraries/rtos/rtx/TARGET_CORTEX_M/RTX_Conf_CM.c
@@ -52,7 +52,7 @@
 #  if   defined(TARGET_LPC1768) || defined(TARGET_LPC2368)   || defined(TARGET_LPC4088) || defined(TARGET_LPC4088_DM) || defined(TARGET_LPC4330) || defined(TARGET_LPC4337) || defined(TARGET_LPC1347) || defined(TARGET_K64F) || defined(TARGET_STM32F401RE)\
    || defined(TARGET_STM32F410RB) || defined(TARGET_KL46Z) || defined(TARGET_KL43Z)  || defined(TARGET_STM32F407) || defined(TARGET_F407VG)  || defined(TARGET_STM32F303VC) || defined(TARGET_LPC1549) || defined(TARGET_LPC11U68) \
    || defined(TARGET_STM32F411RE) || defined(TARGET_STM32F405RG) || defined(TARGET_K22F) || defined(TARGET_STM32F429ZI) || defined(TARGET_STM32F401VC) || defined(TARGET_MAX32610) || defined(TARGET_MAX32600) || defined(TARGET_TEENSY3_1) \
-   || defined(TARGET_STM32L152RE) || defined(TARGET_STM32F446RE) || defined(TARGET_STM32L476VG) || defined(TARGET_STM32L476RG) || defined(TARGET_STM32F469NI) || defined(TARGET_STM32F746NG)
+   || defined(TARGET_STM32L152RE) || defined(TARGET_STM32F446RE) || defined(TARGET_STM32L476VG) || defined(TARGET_STM32L476RG) || defined(TARGET_STM32F469NI) || defined(TARGET_STM32F746NG) || defined(TARGET_STM32L152RC)
 #    define OS_TASKCNT         14
 #  elif defined(TARGET_LPC11U24) || defined(TARGET_STM32F303RE) || defined(TARGET_STM32F303K8) || defined(TARGET_LPC11U35_401)  || defined(TARGET_LPC11U35_501) || defined(TARGET_LPCCAPPUCCINO) || defined(TARGET_LPC1114) \
    || defined(TARGET_LPC812)   || defined(TARGET_KL25Z)         || defined(TARGET_KL26Z)         || defined(TARGET_KL05Z)        || defined(TARGET_STM32F100RB)  || defined(TARGET_STM32F051R8) \
@@ -70,7 +70,7 @@
 #  if   defined(TARGET_LPC1768) || defined(TARGET_LPC2368)   || defined(TARGET_LPC4088) || defined(TARGET_LPC4088_DM) || defined(TARGET_LPC4330) || defined(TARGET_LPC4337) || defined(TARGET_LPC1347)  || defined(TARGET_K64F) || defined(TARGET_STM32F401RE)\
    || defined(TARGET_STM32F410RB) || defined(TARGET_KL46Z) || defined(TARGET_KL43Z) || defined(TARGET_STM32F407) || defined(TARGET_F407VG)  || defined(TARGET_STM32F303VC) || defined(TARGET_LPC1549) || defined(TARGET_LPC11U68) \
    || defined(TARGET_STM32F411RE) || defined(TARGET_STM32F405RG) || defined(TARGET_K22F) || defined(TARGET_STM32F429ZI) || defined(TARGET_STM32F401VC) || defined(TARGET_MAX32610) || defined(TARGET_MAX32600) || defined(TARGET_TEENSY3_1) \
-   || defined(TARGET_STM32L152RE) || defined(TARGET_STM32F446RE) || defined(TARGET_STM32L476VG) || defined(TARGET_STM32L476RG) || defined(TARGET_STM32F469NI) || defined(TARGET_STM32F746NG)
+   || defined(TARGET_STM32L152RE) || defined(TARGET_STM32F446RE) || defined(TARGET_STM32L476VG) || defined(TARGET_STM32L476RG) || defined(TARGET_STM32F469NI) || defined(TARGET_STM32F746NG) || defined(TARGET_STM32L152RC)
 #      define OS_SCHEDULERSTKSIZE    256
 #  elif defined(TARGET_LPC11U24) || defined(TARGET_LPC11U35_401)  || defined(TARGET_LPC11U35_501) || defined(TARGET_LPCCAPPUCCINO)  || defined(TARGET_LPC1114) \
    || defined(TARGET_LPC812)   || defined(TARGET_KL25Z)         || defined(TARGET_KL26Z)        || defined(TARGET_KL05Z)        || defined(TARGET_STM32F100RB)  || defined(TARGET_STM32F051R8) \
@@ -205,6 +205,9 @@
 #elif defined(TARGET_STM32F469NI)
 #    define OS_CLOCK       168000000
 
+#elif defined(TARGET_STM32L152RC)
+#    define OS_CLOCK       24000000
+
 #  else
 #    error "no target defined"
 #  endif