diff --git a/boot-verify-sign b/boot-verify-sign
index c5279d4..466a54c 100755
--- a/boot-verify-sign
+++ b/boot-verify-sign
@@ -1,6 +1,6 @@
 #!/bin/bash
 /bin/bash /usr/local/sbin/verify-boot;
-if [ $? != 0 ]; then
+if [ $? -ne 0 ]; then
   echo "Bad" > /opt/boot-verify-state;
   /bin/bash /usr/local/sbin/sign-boot;
   echo "Good" > /opt/boot-verify-state;