diff --git a/drf_spectacular/contrib/djangorestframework_camel_case.py b/drf_spectacular/contrib/djangorestframework_camel_case.py
index 941eb033..e37d7a86 100644
--- a/drf_spectacular/contrib/djangorestframework_camel_case.py
+++ b/drf_spectacular/contrib/djangorestframework_camel_case.py
@@ -22,7 +22,7 @@ def has_middleware_installed():
 
         for middleware in [import_string(m) for m in settings.MIDDLEWARE]:
             try:
-                if issubclass(CamelCaseMiddleWare, middleware):
+                if issubclass(middleware, CamelCaseMiddleWare):
                     return True
             except TypeError:
                 pass