diff --git a/src/Control/Abstract/Primitive.hs b/src/Control/Abstract/Primitive.hs
index 824f027a5..ccb34da0e 100644
--- a/src/Control/Abstract/Primitive.hs
+++ b/src/Control/Abstract/Primitive.hs
@@ -5,6 +5,7 @@ import Control.Abstract.Environment
 import Control.Abstract.Evaluator
 import Control.Abstract.Heap
 import Control.Abstract.Value
+import qualified Data.Abstract.Environment as Env
 import Data.Abstract.Name
 import Data.Text (unpack)
 import Prologue
@@ -23,6 +24,23 @@ define name def = withCurrentCallStack callStack $ do
   bind name addr
   def >>= assign addr
 
+defineClass :: ( AbstractValue address value effects
+               , HasCallStack
+               , Member (Allocator address value) effects
+               , Member (Env address) effects
+               , Member (Reader ModuleInfo) effects
+               , Member (Reader Span) effects
+               )
+            => Name
+            -> [Name]
+            -> Evaluator address value effects a
+            -> Evaluator address value effects ()
+defineClass name superclasses scope = define name $ do
+  env <- locally $ do
+    void $ scope
+    Env.head <$> getEnv
+  klass name (map (string . formatName) superclasses) env
+
 lambda :: (AbstractFunction address value effects, Member Fresh effects)
        => (Name -> Evaluator address value effects address)
        -> Evaluator address value effects value