diff --git a/targets/targets.json b/targets/targets.json
index 6b7e34d5131..d9d6a005dd7 100644
--- a/targets/targets.json
+++ b/targets/targets.json
@@ -5098,7 +5098,7 @@
             "function": "ArmMuscaB1Code.binary_hook"
         },
         "secure_image_filename": "tfm_s.bin",
-        "tfm_target_name": "musca_b1/sse_200",
+        "tfm_target_name": "arm/musca_b1/sse_200",
         "tfm_bootloader_supported": true,
         "tfm_default_toolchain": "ARMCLANG",
         "tfm_supported_toolchains": [
@@ -5154,7 +5154,7 @@
             "function": "ArmMuscaS1Code.binary_hook"
         },
         "secure_image_filename": "tfm_s.bin",
-        "tfm_target_name": "musca_s1",
+        "tfm_target_name": "arm/musca_s1",
         "tfm_bootloader_supported": true,
         "tfm_default_toolchain": "ARMCLANG",
         "tfm_supported_toolchains": [