diff --git a/check_imap_starttls.sh b/check_imap_starttls.sh
index 0b488e7..9bf1c84 100755
--- a/check_imap_starttls.sh
+++ b/check_imap_starttls.sh
@@ -81,7 +81,7 @@ EOT
 openssl -h 2> /dev/null
 if [ $? != 0 ]; then
     echo "There is a problem with your OpenSSL program"
-    exit 3
+    exit $STATE_UNKNOWN
 fi