diff --git a/Implementierung/src/md2_impls/md2_2.c b/Implementierung/src/md2_impls/md2_2.c
index f1ab4b6..e250f05 100644
--- a/Implementierung/src/md2_impls/md2_2.c
+++ b/Implementierung/src/md2_impls/md2_2.c
@@ -46,7 +46,10 @@ void md2_checksum_2(size_t, uint8_t*) {}
 void md2_hash_2(size_t len, const uint8_t buf[len], uint8_t out[16]) {
   FILE* file;
   struct stat file_stat;
-  open_file((char*)buf, &file, &file_stat);
+  if (!open_file((char*)buf, &file, &file_stat)) {
+    fprintf(stderr, "Error opening the file!");
+    return;
+  }
 
   // === step 3 ===
   uint8_t* messageDigestBuf = calloc(48, sizeof(uint8_t));