diff --git a/TESTS/mbedmicro-rtos-mbed/mutex/main.cpp b/TESTS/mbedmicro-rtos-mbed/mutex/main.cpp
index 457d0f5bab..d3612f6a7c 100644
--- a/TESTS/mbedmicro-rtos-mbed/mutex/main.cpp
+++ b/TESTS/mbedmicro-rtos-mbed/mutex/main.cpp
@@ -24,6 +24,8 @@
     #define STACK_SIZE DEFAULT_STACK_SIZE/2		
 #elif defined(TARGET_STM32F303K8) && defined(TOOLCHAIN_IAR)
     #define STACK_SIZE DEFAULT_STACK_SIZE/2
+#elif defined(TARGET_STM32L073RZ)
+    #define STACK_SIZE DEFAULT_STACK_SIZE/2
 #elif (defined(TARGET_EFM32HG_STK3400)) && !defined(TOOLCHAIN_ARM_MICRO)
     #define STACK_SIZE 512
 #elif (defined(TARGET_EFM32LG_STK3600) || defined(TARGET_EFM32WG_STK3800) || defined(TARGET_EFM32PG_STK3401)) && !defined(TOOLCHAIN_ARM_MICRO)
diff --git a/TESTS/mbedmicro-rtos-mbed/semaphore/main.cpp b/TESTS/mbedmicro-rtos-mbed/semaphore/main.cpp
index f2ddc40697..60f3f79918 100644
--- a/TESTS/mbedmicro-rtos-mbed/semaphore/main.cpp
+++ b/TESTS/mbedmicro-rtos-mbed/semaphore/main.cpp
@@ -25,6 +25,8 @@
     #define STACK_SIZE DEFAULT_STACK_SIZE/2	
 #elif defined(TARGET_STM32F302R8) && defined(TOOLCHAIN_IAR)
     #define STACK_SIZE DEFAULT_STACK_SIZE/2		
+#elif defined(TARGET_STM32L073RZ)
+    #define STACK_SIZE DEFAULT_STACK_SIZE/2
 #elif defined(TARGET_STM32F303K8) && defined(TOOLCHAIN_IAR)
     #define STACK_SIZE DEFAULT_STACK_SIZE/4
 #elif (defined(TARGET_EFM32HG_STK3400)) && !defined(TOOLCHAIN_ARM_MICRO)
diff --git a/TESTS/mbedmicro-rtos-mbed/threads/main.cpp b/TESTS/mbedmicro-rtos-mbed/threads/main.cpp
index ee8194387c..52286f11f7 100644
--- a/TESTS/mbedmicro-rtos-mbed/threads/main.cpp
+++ b/TESTS/mbedmicro-rtos-mbed/threads/main.cpp
@@ -21,6 +21,8 @@
     #define STACK_SIZE 512
 #elif defined(TARGET_STM32F410RB)
     #define STACK_SIZE 512
+#elif defined(TARGET_STM32L073RZ)
+    #define STACK_SIZE 512
 #else
     #define STACK_SIZE DEFAULT_STACK_SIZE
 #endif