diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py
index edceca00ed..8592d234a3 100644
--- a/bitbake/lib/bb/cooker.py
+++ b/bitbake/lib/bb/cooker.py
@@ -1080,7 +1080,7 @@ class BBCooker:
 
         for pfn in self.recipecache.pkg_fn:
             inherits = self.recipecache.inherits.get(pfn, None)
-            if inherits and inherits.count(klass) > 0:
+            if inherits and klass in inherits:
                 pkg_list.append(self.recipecache.pkg_fn[pfn])
 
         return pkg_list