diff --git a/neuralNetworkTests.c b/neuralNetworkTests.c
index 9fab030..1a43b3b 100644
--- a/neuralNetworkTests.c
+++ b/neuralNetworkTests.c
@@ -15,8 +15,8 @@ static void writeWeights(Layer layer, FILE *file)
 
 static void writeBiases(Layer layer, FILE *file)
 {
-    unsigned int n = (unsigned int)layer.weights.rows * layer.weights.cols;
-    fwrite(layer.biases.buffer, sizeof(float ), n, file);
+    unsigned int n = (unsigned int)layer.biases.rows * layer.biases.cols;
+    fwrite(layer.biases.buffer, sizeof(MatrixType), n, file);
 }
 
 static void prepareNeuralNetworkFile(const char *path, const NeuralNetwork nn)
@@ -46,7 +46,7 @@ static void prepareNeuralNetworkFile(const char *path, const NeuralNetwork nn)
     {
         Layer layer = nn.layers[i];
    
-        int outputDim = (unsigned int)layer.weights.rows;
+        unsigned int outputDim = (unsigned int)layer.weights.rows;
         fwrite(&outputDim, sizeof(unsigned int), 1, file);
    
         //dimensionen festlegen(weights)