diff --git a/spectre-meltdown-checker.sh b/spectre-meltdown-checker.sh
index 3be2418..22239f3 100755
--- a/spectre-meltdown-checker.sh
+++ b/spectre-meltdown-checker.sh
@@ -290,6 +290,10 @@ if grep ^flags /proc/cpuinfo | grep -qw pti; then
 	# vanilla PTI patch sets the 'pti' flag in cpuinfo
 	pstatus green YES
 	kpti_enabled=1
+elif grep ^flags /proc/cpuinfo | grep -qw kaiser; then
+	# kernel line 4.9 sets the 'kaiser' flag in cpuinfo
+	pstatus green YES
+	kpti_enabled=1
 elif [ -e /sys/kernel/debug/x86/pti_enabled ]; then
 	# RedHat Backport creates a dedicated file, see https://access.redhat.com/articles/3311301
 	kpti_enabled=$(cat /sys/kernel/debug/x86/pti_enabled 2>/dev/null)