diff --git a/targets/TARGET_STM/mbed_rtx.h b/targets/TARGET_STM/mbed_rtx.h
index d2fef8854e..4bf9880dee 100644
--- a/targets/TARGET_STM/mbed_rtx.h
+++ b/targets/TARGET_STM/mbed_rtx.h
@@ -392,6 +392,21 @@
 #define OS_CLOCK                100000000
 #endif
 
+#elif defined(TARGET_STM32F412ZG)
+
+#ifndef INITIAL_SP
+#define INITIAL_SP              (0x20040000UL)
+#endif
+#ifndef OS_TASKCNT
+#define OS_TASKCNT              14
+#endif
+#ifndef OS_MAINSTKSIZE
+#define OS_MAINSTKSIZE          256
+#endif
+#ifndef OS_CLOCK
+#define OS_CLOCK                100000000
+#endif
+
 #elif defined(TARGET_STM32F446RE)
 
 #ifndef INITIAL_SP