diff --git a/scripts/ssh-server-check.sh b/scripts/ssh-server-check.sh
index ac24c80..5a7e87e 100755
--- a/scripts/ssh-server-check.sh
+++ b/scripts/ssh-server-check.sh
@@ -132,14 +132,13 @@ check_ssh_files() {
 
 ssh_fingerprint() {
 	local field="$1"
-	local ca_path
 
 	if [[ -z "$field" ]]; then
-        echo "usage: ssh_fingerprint <trusteduserca|hostcertificate|...>" >&2
+        echo "usage: ssh_fingerprint <field>" >&2
         return 2
     fi
 
-    cfg_path=$(ssh_config_val $field)
+    local cfg_path=$(ssh_config_val $field)
 
     if [[ -z "$cfg_path" ]]; then
         echo "error: sshd field '$field' not found or empty" >&2