diff --git a/src/c/a3.c b/src/c/a3.c
index e45115b..88296fa 100644
--- a/src/c/a3.c
+++ b/src/c/a3.c
@@ -4,7 +4,7 @@
 #include <memory.h>
 
 void memdump(unsigned char *string) {
-    printf("ADDR           00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F  0123456789ABCDEF\n");
+    printf("ADDR              00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F  0123456789ABCDEF\n");
 
     int columns = 16;
     int rows = 4;
@@ -47,11 +47,6 @@ int main(int argc, char **argv) {
         return -1;
     }
 
-    size_t size = 4 * 16;
-    unsigned char *buffer = malloc(size);
-    if(buffer == NULL) return -1;
-
-
     memdump((unsigned char *) argv[1]);
 
 
@@ -61,11 +56,12 @@ int main(int argc, char **argv) {
     unsigned char *copy = malloc(4 * 16 * sizeof(char));
     strcpy((char *) copy, argv[1]);
 
-    char *lastAddress = NULL;
+    char test = 't';
+    char *lastAddress = &test;
     int count = memreplace((char *) copy, *argv[2], *argv[3], &lastAddress);
     printf("Suchzeichen wurde %i mal gefunden und ersetzt\n", count);
     //TODO: change type
-    printf("zuletzt an Addresse %p \n", *lastAddress);
+    printf("zuletzt an Addresse %p \n", lastAddress);
     memdump(copy);
 
     free(copy);