diff --git a/README.md b/README.md
index a0d05cb..c409ef5 100644
--- a/README.md
+++ b/README.md
@@ -70,10 +70,9 @@ optional arguments:
                         (key,value1:value2). Return warning if equality check
                         fails
   -Q [KEY_VALUE_LIST_CRITICAL [KEY_VALUE_LIST_CRITICAL ...]], --key_equals_critical [KEY_VALUE_LIST_CRITICAL [KEY_VALUE_LIST_CRITICAL ...]]
-                        Same as -q but return critical if equality check
-                        fails.
-  -u Same as -Q but return critical if equality check
-                        fails.
+                        Same as -q but return critical if equality check fails.
+  -u [KEY_VALUE_LIST_UNKNOWN [KEY_VALUE_LIST_UNKNOWN --key_equals_unknown [KEY_VALUE_LIST_UNKNOWN [KEY_VALUE_LIST_UNKNOWN ...]]
+                        Same as -Q but return unknown if equality check fails.
   -m [METRIC_LIST [METRIC_LIST ...]], --key_metric [METRIC_LIST [METRIC_LIST ...]]
                         Gathers the values of these keys (key[>alias],UnitOfMe
                         asure,WarnRange,CriticalRange,Min,Max) for Nagios