diff --git a/arch/microblaze/platform/Kconfig.platform b/arch/microblaze/platform/Kconfig.platform
index 28e418a..669c7ee 100644
--- a/arch/microblaze/platform/Kconfig.platform
+++ b/arch/microblaze/platform/Kconfig.platform
@@ -53,7 +53,7 @@
 
 config OPT_LIB_ASM
 	bool "Optimalized lib function ASM"
-	depends on OPT_LIB_FUNCTION
+	depends on OPT_LIB_FUNCTION && (XILINX_MICROBLAZE0_USE_BARREL = 1)
 	default n
 	help
 	  Allows turn on optimalized library function (memcpy and memmove).