diff --git a/Implementierung/src/io.c b/Implementierung/src/io.c
index 942f235..3dbc7ff 100644
--- a/Implementierung/src/io.c
+++ b/Implementierung/src/io.c
@@ -35,8 +35,7 @@ uint8_t* read_file(const char* path, size_t* size) {
 
   uint8_t* data = malloc(statOfFile.st_size);
   if (data == NULL) {
-    printf("Failure: malloc returns NULL");
-    return EXIT_FAILURE;
+    return;
   }
 
   size_t bytesRead =
diff --git a/Implementierung/src/main.c b/Implementierung/src/main.c
index 42b8e6f..f4e5fc8 100644
--- a/Implementierung/src/main.c
+++ b/Implementierung/src/main.c
@@ -1,4 +1,5 @@
 #include <stdbool.h>
+#include <sys/resource.h>
 
 #include "../lib/helper.h"
 #include "../lib/io.h"
diff --git a/Implementierung/src/md2_impls/md2_0.c b/Implementierung/src/md2_impls/md2_0.c
index 941b352..93b7dee 100644
--- a/Implementierung/src/md2_impls/md2_0.c
+++ b/Implementierung/src/md2_impls/md2_0.c
@@ -26,8 +26,7 @@ void md2_hash_0(size_t len, const uint8_t buf[len], uint8_t out[16]) {
   // +16 for the checksum
   uint8_t* newBuf = calloc(len + 16, sizeof(uint8_t));
   if (newBuf == NULL) {
-    printf("Failure: calloc returns NULL");
-    return EXIT_FAILURE;
+    return;
   }
   memcpy(newBuf, buf, len - paddingNeeded);
 
@@ -49,8 +48,7 @@ void md2_hash_0(size_t len, const uint8_t buf[len], uint8_t out[16]) {
   // === step 3 ===
   uint8_t* messageDigestBuf = calloc(48, sizeof(uint8_t));
   if (messageDigestBuf == NULL) {
-    printf("Failure: calloc returns NULL");
-    return EXIT_FAILURE;
+    return;
   }
 
 
diff --git a/Implementierung/src/md2_impls/md2_1.c b/Implementierung/src/md2_impls/md2_1.c
index d4fb80b..ac1d867 100644
--- a/Implementierung/src/md2_impls/md2_1.c
+++ b/Implementierung/src/md2_impls/md2_1.c
@@ -47,8 +47,7 @@ void md2_hash_1(size_t len, const uint8_t buf[len], uint8_t out[16])
 
   uint8_t* newBuf = aligned_alloc(16, sizeof(uint8_t)*(len + 16));
   if (newBuf == NULL) {
-    printf("Failure: aligned_alloc returns NULL");
-    return EXIT_FAILURE;
+    return;
   }
 
   for(size_t i = 0; i < 16; i++) {
@@ -65,8 +64,7 @@ void md2_hash_1(size_t len, const uint8_t buf[len], uint8_t out[16])
   // === step 3 ===
   uint8_t *messageDigestBuf = aligned_alloc(16, sizeof(uint8_t) * 48);
   if (messageDigestBuf == NULL) {
-    printf("Failure: aligned_alloc returns NULL");
-    return EXIT_FAILURE;
+    return;
   }
 
   for (size_t i = 0; i < 48; i++) {
diff --git a/Implementierung/src/md2_impls/md2_2.c b/Implementierung/src/md2_impls/md2_2.c
index 5253ce7..279af73 100644
--- a/Implementierung/src/md2_impls/md2_2.c
+++ b/Implementierung/src/md2_impls/md2_2.c
@@ -51,8 +51,7 @@ void md2_hash_2(size_t len, const uint8_t buf[len], uint8_t out[16]) {
   // === step 3 ===
   uint8_t* messageDigestBuf = calloc(48, sizeof(uint8_t));
   if (messageDigestBuf == NULL) {
-    printf("Failure: calloc returns NULL");
-    return EXIT_FAILURE;
+    return;
   }
 
   // === step 4 ===