diff --git a/source/Rbm.hpp b/source/Rbm.hpp
index 344da56..a08e49b 100644
--- a/source/Rbm.hpp
+++ b/source/Rbm.hpp
@@ -61,16 +61,16 @@ public:
 		void fromJson(Json::Value params)
 		{
 			std::cout << "Importing Rbm::Params" << std::endl;
-			weightDecay = params["weightDecay"].asDouble();
-			learningRate = params["learningRate"].asDouble();
-			momentum = params["momentum"].asDouble();
-			doRaoBlackwell = params["doRaoBlackwell"] == 1;
-			gibbsDoSampleVisible = params["gibbsDoSampleVisible"] == 1;
-			gibbsDoSampleHidden = params["gibbsDoSampleHidden"] == 1;
-			doSampleBatch = params["doSampleBatch"] == 1;
-			numGibbs = params["numGibbs"].asUInt();
-			miniBatchSize = params["miniBatchSize"].asUInt();
-			numEpochs = params["numEpochs"].asUInt();
+			weightDecay = params.get("weightDecay", weightDecay).asDouble();
+			learningRate = params.get("learningRate", learningRate).asDouble();
+			momentum = params.get("momentum", momentum).asDouble();
+			doRaoBlackwell = params.get("doRaoBlackwell", doRaoBlackwell) == 1;
+			gibbsDoSampleVisible = params.get("gibbsDoSampleVisible", gibbsDoSampleVisible) == 1;
+			gibbsDoSampleHidden = params.get("gibbsDoSampleHidden", gibbsDoSampleHidden) == 1;
+			doSampleBatch = params.get("doSampleBatch", doSampleBatch) == 1;
+			numGibbs = params.get("numGibbs", (int)numGibbs).asUInt();
+			miniBatchSize = params.get("miniBatchSize", (int)miniBatchSize).asUInt();
+			numEpochs = params.get("numEpochs", (int)numEpochs).asUInt();
 		}
 		
 		double weightDecay;