diff --git a/boot/zephyr/Kconfig b/boot/zephyr/Kconfig
index 9afd292b0..f7725d578 100644
--- a/boot/zephyr/Kconfig
+++ b/boot/zephyr/Kconfig
@@ -286,7 +286,7 @@ config MCUBOOT_CLEANUP_RAM
 if MBEDTLS
 
 config MBEDTLS_CFG_FILE
-	default "config-tls-generic.h" if MBEDTLS_BUILTIN
+	default "config-mbedtls.h" if MBEDTLS_BUILTIN
 	default "mcuboot-mbedtls-cfg.h" if BOOT_USE_MBEDTLS
 
 endif