diff --git a/erpc/platform/arm/musca_b1/config_erpc_target.h b/erpc/platform/arm/musca_b1/config_erpc_target.h
new file mode 100644
index 0000000..89a2c5c
--- /dev/null
+++ b/erpc/platform/arm/musca_b1/config_erpc_target.h
@@ -0,0 +1,14 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * SPDX-FileCopyrightText: Copyright The TrustedFirmware-M Contributors
+ *
+ */
+
+/* Target side config file for running the eRPC test framework */
+
+#ifndef __CONFIG_ERPC_TARGET_H__
+#define __CONFIG_ERPC_TARGET_H__
+
+#define ERPC_UART           Driver_USART1
+
+#endif /* __CONFIG_ERPC_TARGET_H__ */