diff --git a/kdump-lib.sh b/kdump-lib.sh
index d7d28ee..a05a888 100755
--- a/kdump-lib.sh
+++ b/kdump-lib.sh
@@ -841,7 +841,7 @@ kdump_get_arch_recommend_size()
 	else
 		arch=$(lscpu | grep Architecture | awk -F ":" '{ print $2 }' | tr '[:lower:]' '[:upper:]')
 		if [[ $arch == "X86_64" ]] || [[ $arch == "S390X" ]]; then
-			ck_cmdline="1G-4G:160M,4G-64G:192M,64G-1T:256M,1T-:512M"
+			ck_cmdline="1G-4G:192M,4G-64G:256M,64G-:512M"
 		elif [[ $arch == "AARCH64" ]]; then
 			ck_cmdline="2G-:448M"
 		elif [[ $arch == "PPC64LE" ]]; then