diff --git a/misc/acrn-config/board_config/misc_cfg_h.py b/misc/acrn-config/board_config/misc_cfg_h.py
index 7f07a8670..496a73132 100644
--- a/misc/acrn-config/board_config/misc_cfg_h.py
+++ b/misc/acrn-config/board_config/misc_cfg_h.py
@@ -115,7 +115,7 @@ def generate_file(config):
     print("{}".format(MISC_CFG_HEADER), file=config)
 
     # define CONFIG_MAX_PCPCU_NUM
-    print("#define CONFIG_MAX_PCPU_NUM\t{}U".format(max_cpu_num), file=config)
+    print("#define MAX_PCPU_NUM\t{}U".format(max_cpu_num), file=config)
 
     # set macro of max clos number
     (cache_support, clos_max) = board_cfg_lib.clos_info_parser(board_cfg_lib.BOARD_INFO_FILE)