diff --git a/neuralNetworkTests.c b/neuralNetworkTests.c
index 1955986..589f8d2 100644
--- a/neuralNetworkTests.c
+++ b/neuralNetworkTests.c
@@ -5,7 +5,7 @@
 #include "unity.h"
 #include "neuralNetwork.h"
 
-#define FILE_HEADER_STRING  //UNVOLLSTÄNDIGE Definition!!!
+#define FILE_HEADER_STRING "__info2_neural_network_file_format__" 
 
 static void prepareNeuralNetworkFile(const char *path, const NeuralNetwork nn)
 {