diff --git a/targets/TARGET_ARM_SSG/TARGET_MUSCA_B1/device/TOOLCHAIN_ARMC6/musca_ns.sct b/targets/TARGET_ARM_SSG/TARGET_MUSCA_B1/device/TOOLCHAIN_ARMC6/musca_ns.sct
index c85746cb10..d5a58d417e 100644
--- a/targets/TARGET_ARM_SSG/TARGET_MUSCA_B1/device/TOOLCHAIN_ARMC6/musca_ns.sct
+++ b/targets/TARGET_ARM_SSG/TARGET_MUSCA_B1/device/TOOLCHAIN_ARMC6/musca_ns.sct
@@ -18,6 +18,10 @@
  * limitations under the License.
  */
 
+#if !defined(BL2)
+  #define BL2
+#endif
+
 #include "../../partition/region_defs.h"
 #include "../cmsis_nvic.h"
 
diff --git a/targets/TARGET_ARM_SSG/TARGET_MUSCA_S1/device/TOOLCHAIN_ARMC6/musca_ns.sct b/targets/TARGET_ARM_SSG/TARGET_MUSCA_S1/device/TOOLCHAIN_ARMC6/musca_ns.sct
index 77554e2d88..27c7c4b4a8 100644
--- a/targets/TARGET_ARM_SSG/TARGET_MUSCA_S1/device/TOOLCHAIN_ARMC6/musca_ns.sct
+++ b/targets/TARGET_ARM_SSG/TARGET_MUSCA_S1/device/TOOLCHAIN_ARMC6/musca_ns.sct
@@ -18,6 +18,10 @@
  * limitations under the License.
  */
 
+#if !defined(BL2)
+  #define BL2
+#endif
+
 #include "../../partition/region_defs.h"
 #include "../cmsis_nvic.h"