diff --git a/arch/arc/arcem/port_config.h b/arch/arc/arcem/port_config.h
index 8f247376..b8760b37 100644
--- a/arch/arc/arcem/port_config.h
+++ b/arch/arc/arcem/port_config.h
@@ -23,5 +23,6 @@
 #define TOS_CFG_CPU_STK_GROWTH              CPU_STK_GROWTH_DESCENDING
 #define TOS_CFG_CPU_HRTIMER_EN              0u
 #define TOS_CFG_CPU_LEAD_ZEROS_ASM_PRESENT  1u
+#define TOS_CFG_CPU_BYTE_ORDER              0u
 
 #endif /* _PORT_CONFIG_H_ */
diff --git a/board/ARC_NSIM_EM/hello_world/Makefile b/board/ARC_NSIM_EM/hello_world/Makefile
index 8ed30185..c660adde 100644
--- a/board/ARC_NSIM_EM/hello_world/Makefile
+++ b/board/ARC_NSIM_EM/hello_world/Makefile
@@ -95,7 +95,7 @@ ARCH_SRC = \
 C_SOURCES += $(ARCH_SRC)
 
 CMSIS_SRC =  \
-		${wildcard $(TOP_DIR)/osal/cmsis_os/*.c}
+		${wildcard $(TOP_DIR)/osal/cmsis_os/cmsis_os.c}
 C_SOURCES += $(CMSIS_SRC)
 
 APPLICATION_SRC =  \