diff --git a/spectre-meltdown-checker.sh b/spectre-meltdown-checker.sh
index 46924bd..f1d821f 100755
--- a/spectre-meltdown-checker.sh
+++ b/spectre-meltdown-checker.sh
@@ -5783,6 +5783,7 @@ check_CVE_2021_26341()
 check_CVE_2021_26341_linux()
 {
 	status=UNK
+	sys_interface_available=0
 	sls_kernel_mitigation=''
 	msg=''
 	_info_nol "* Mitigated according to the /sys interface: "