diff --git a/cmsis/CMSIS_5/CMSIS/RTOS2/RTX/Include/rtx_def.h b/cmsis/CMSIS_5/CMSIS/RTOS2/RTX/Include/rtx_def.h
index a7076a4e46fc..fb468730d220 100644
--- a/cmsis/CMSIS_5/CMSIS/RTOS2/RTX/Include/rtx_def.h
+++ b/cmsis/CMSIS_5/CMSIS/RTOS2/RTX/Include/rtx_def.h
@@ -14,9 +14,11 @@
 #ifndef RTX_DEF_H_
 #define RTX_DEF_H_
 
-#ifdef   _RTE_
-#include "RTE_Components.h"
-#endif
+// Mbed OS - this is intentionally commented out due to C/C++ headers being pulled it
+// This header is included in assembly files
+//#ifdef   _RTE_
+//#include "RTE_Components.h"
+//#endif
 #include "RTX_Config.h"
 
 #if (defined(OS_OBJ_MEM_USAGE) && (OS_OBJ_MEM_USAGE != 0))