diff --git a/src/mlpack/methods/ann/layer/lambda_map_reduce_impl.hpp b/src/mlpack/methods/ann/layer/lambda_map_reduce_impl.hpp
index fbbbde31f9..28ffae693b 100644
--- a/src/mlpack/methods/ann/layer/lambda_map_reduce_impl.hpp
+++ b/src/mlpack/methods/ann/layer/lambda_map_reduce_impl.hpp
@@ -292,7 +292,6 @@ void LambdaMapReduceType<ReductionRuleType, MatType>::ComputeOutputDimensions()
     this->outputDimensions = this->inputDimensions;
     return;
   }
-  network.front()->InputDimensions() = this->inputDimensions;
   inSize = this->inputDimensions[0];
   for (size_t i = 1; i < this->inputDimensions.size(); ++i)
     inSize *= this->inputDimensions[i];
diff --git a/src/mlpack/methods/ann/reduction_rules/add_reduction.hpp b/src/mlpack/methods/ann/reduction_rules/add_reduction.hpp
index b10f74d1b2..11bf91d39e 100644
--- a/src/mlpack/methods/ann/reduction_rules/add_reduction.hpp
+++ b/src/mlpack/methods/ann/reduction_rules/add_reduction.hpp
@@ -73,7 +73,7 @@ class AddReductionType
 		const std::vector<size_t> networkSize = network[0]->OutputDimensions();
 		for (size_t i = 1; i < network.size(); i++)
 		{
-			if (networkSize != network[i]->OutputDimensions())
+			if (!(networkSize == network[i]->OutputDimensions()))
 			{
 				Log::Fatal << "Network size mismatch." << std::endl;
 			}