diff --git a/crashkernel-howto.txt b/crashkernel-howto.txt
index dfbe7a7..6c66ee7 100644
--- a/crashkernel-howto.txt
+++ b/crashkernel-howto.txt
@@ -17,7 +17,7 @@ Latest kexec-tools provides "kdumpctl get-default-crashkernel" to retrieve
 the default crashkernel value,
 
 	$ echo $(kdumpctl get-default-crashkernel)
-	2G-64G:256M,64G-:512M
+	1G-2G:192M,2G-64G:256M,64G-:512M
 
 It will be taken as the default value of 'crashkernel=', you can use
 this value as a reference for setting crashkernel value manually.
diff --git a/kdump-lib.sh b/kdump-lib.sh
index 8a51722..f31fc3e 100755
--- a/kdump-lib.sh
+++ b/kdump-lib.sh
@@ -1156,13 +1156,13 @@ kdump_get_arch_recommend_crashkernel()
 	_arch=$(uname -m)
 
 	if [[ $_arch == "x86_64" ]] || [[ $_arch == "s390x" ]]; then
-		_ck_cmdline="2G-64G:256M,64G-:512M"
+		_ck_cmdline="1G-2G:192M,2G-64G:256M,64G-:512M"
 		is_sme_or_sev_active && ((_delta += 64))
 	elif [[ $_arch == "aarch64" ]]; then
 		local _running_kernel
 
 		# Base line for 4K variant kernel. The formula is based on x86 plus extra = 64M
-		_ck_cmdline="2G-4G:256M,4G-64G:320M,64G-:576M"
+		_ck_cmdline="1G-4G:256M,4G-64G:320M,64G-:576M"
 		if [[ -z "$2" ]]; then
 			_running_kernel=$(_get_kdump_kernel_version)
 		else