diff --git a/src/brevitas/proxy/runtime_quant.py b/src/brevitas/proxy/runtime_quant.py
index 512dde45e..72124a6a4 100644
--- a/src/brevitas/proxy/runtime_quant.py
+++ b/src/brevitas/proxy/runtime_quant.py
@@ -197,7 +197,7 @@ def forward(self, x: Union[Tensor, QuantTensor]) -> Union[Tensor, QuantTensor]:
 class ActQuantProxyFromInjector(ActQuantProxyFromInjectorBase):
 
     def __init__(self, quant_layer, quant_injector):
-        super().__init__(self, quant_layer, quant_injector)
+        super().__init__(quant_layer, quant_injector)
         self.cache_class = _CachedIO
 
     def scale(self, force_eval=True):