diff --git a/src/elvis_style.erl b/src/elvis_style.erl
index 5329914..e1442e3 100644
--- a/src/elvis_style.erl
+++ b/src/elvis_style.erl
@@ -1834,7 +1834,9 @@ has_state_record(Root) ->
 -spec has_state_type(ktn_code:tree_node()) -> boolean().
 has_state_type(Root) ->
     IsStateType =
-        fun(Node) -> (type_attr == ktn_code:type(Node)) and (state == ktn_code:attr(name, Node))
+        fun(Node) ->
+            TypeOrOpaque = (type_attr == ktn_code:type(Node)) or (opaque == ktn_code:type(Node)),
+            TypeOrOpaque and (state == ktn_code:attr(name, Node))
         end,
     elvis_code:find(IsStateType, Root) /= [].