diff --git a/meta-arm-bsp/conf/machine/musca-b1.conf b/meta-arm-bsp/conf/machine/musca-b1.conf
index fa1264ec..073c466e 100644
--- a/meta-arm-bsp/conf/machine/musca-b1.conf
+++ b/meta-arm-bsp/conf/machine/musca-b1.conf
@@ -25,4 +25,4 @@ ZEPHYR_BOARD = "v2m_musca_b1"
 ZEPHYR_INHERIT_CLASSES += "zephyr-qemuboot"
 ARCH:musca-b1 = "arm"
 
-TFM_PLATFORM = "musca_b1/sse_200"
+TFM_PLATFORM = "arm/musca_b1/sse_200"
diff --git a/meta-arm-bsp/conf/machine/musca-s1.conf b/meta-arm-bsp/conf/machine/musca-s1.conf
index d71cdfec..be15c60e 100644
--- a/meta-arm-bsp/conf/machine/musca-s1.conf
+++ b/meta-arm-bsp/conf/machine/musca-s1.conf
@@ -9,4 +9,4 @@ require conf/machine/include/arm/armv8-m/tune-cortexm33.inc
 # GLIBC will not work with Cortex-M.
 TCLIBC = "newlib"
 
-TFM_PLATFORM = "musca_s1"
+TFM_PLATFORM = "arm/musca_s1"