diff --git a/Layer.cpp b/Layer.cpp
index f4b7319..5c7b660 100644
--- a/Layer.cpp
+++ b/Layer.cpp
@@ -41,7 +41,7 @@ double Layer::getWeightedSum(size_t outputNeuron) const
 		sum += neuron.getWeightedOutputValue(outputNeuron);
 	}
 
-	return sum;
+    return sum / size();
 }
 
 void Layer::connectTo(const Layer & nextLayer)