diff --git a/targets/TARGET_ARM_SSG/TARGET_MUSCA_B1/device/cmsis.h b/targets/TARGET_ARM_SSG/TARGET_MUSCA_B1/device/cmsis.h
index 4bc147df1a..720bad2889 100644
--- a/targets/TARGET_ARM_SSG/TARGET_MUSCA_B1/device/cmsis.h
+++ b/targets/TARGET_ARM_SSG/TARGET_MUSCA_B1/device/cmsis.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 Arm Limited
+ * Copyright (c) 2017-2020 Arm Limited
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -81,4 +81,8 @@
   #warning Not supported compiler type
 #endif
 
+#if defined(TARGET_MUSCA_B1)
+#include "cmsis_nvic.h"
+#endif
+
 #endif /*__MUSCA_B1_CMSIS_H__ */