diff --git a/neuralNetworkTests.c b/neuralNetworkTests.c
index 22ad1f7..1cf7112 100644
--- a/neuralNetworkTests.c
+++ b/neuralNetworkTests.c
@@ -5,7 +5,6 @@
 #include "unity.h"
 #include "neuralNetwork.h"
 
-#define FILE_HEADER_STRING "__info2_neural_network_file_format__"
 
 static void prepareNeuralNetworkFile(const char *path, const NeuralNetwork nn)
 {
@@ -14,9 +13,9 @@ static void prepareNeuralNetworkFile(const char *path, const NeuralNetwork nn)
         return;
     }
     
-    // Magic String (File Header) schreiben
-    size_t headerLen = strlen(FILE_HEADER_STRING);
-    fwrite(FILE_HEADER_STRING, sizeof(char), headerLen, file);
+    // Magic String direkt schreiben
+    const char *header = "__info2_neural_network_file_format__";
+    fwrite(header, sizeof(char), strlen(header), file);
     
     // Erste inputDimension schreiben (vom ersten Layer)
     if (nn.numberOfLayers > 0) {