diff --git a/Jenkinsfile b/Jenkinsfile
index 9bd8c1c..c15adeb 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -599,7 +599,7 @@ EOF
                       echo "Instance Security Group: \$INSTANCE_SG"
                       aws ec2 describe-security-groups \\
                         --group-ids \$INSTANCE_SG \\
-                        --query 'SecurityGroups[*].IpPermissions[?FromPort==\`22\`]' \\
+                        --query 'SecurityGroups[*].IpPermissions[?FromPort==\\\`22\\\`]' \\
                         --output table 2>/dev/null || echo "Could not retrieve security group rules"
                     else
                       echo "Could not determine instance security group"