diff --git a/syncoid b/syncoid
index 79ad45f..3213195 100755
--- a/syncoid
+++ b/syncoid
@@ -2175,7 +2175,7 @@ sub parsespecialoptions {
 				return undef;
 			}
 
-			if ($char eq 'o' || $char eq 'x') {
+			if ($char eq 'o' || $char eq 'x' || $char eq 'X') {
 				$lastOption = $char;
 				$optionValue = 1;
 			} else {