diff --git a/Startcode/neuralNetworkTests.c b/Startcode/neuralNetworkTests.c
index 9392a30..e3d82af 100644
--- a/Startcode/neuralNetworkTests.c
+++ b/Startcode/neuralNetworkTests.c
@@ -4,15 +4,15 @@
 #include <math.h>
 #include "unity.h"
 #include "neuralNetwork.h"
-
+#define FILE_HEADER_STRING "__info2_neural_network_file_format__"
 
 static void prepareNeuralNetworkFile(const char *path, const NeuralNetwork nn)
 {
     FILE *file = fopen(path, "wb");
-
+    
     if(file != NULL)
     {
-        const char *fileTag = "__info2_neural_network_file_format__";
+        const char *fileTag = FILE_HEADER_STRING;
 
         fwrite(fileTag, sizeof(char), strlen(fileTag), file);