diff --git a/c-programming/reverse-ramdisk.c b/c-programming/reverse-ramdisk.c
index c3fd48d..3756ae9 100644
--- a/c-programming/reverse-ramdisk.c
+++ b/c-programming/reverse-ramdisk.c
@@ -17,6 +17,7 @@ To-Do: error handling on line 167, function fread()
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <math.h>
 
 typedef struct {
 	int ID;
@@ -45,12 +46,12 @@ int tf_alloc(size_t n, size_t type_size) {
 	size_t file_path_len = len_digit + strlen("tf_.tmp");
 	char* file_path = malloc((file_path_len + 1) * sizeof(char));
 	if (file_path == NULL) {
-		fail_line(-2);
+		line_fail(-2);
 		return -1;
 	}
 	int res = snprintf(file_path, file_path_len, "tf_%zu.tmp", num_temp_files);
 	if ((size_t) res != file_path_len) {
-		fail_line(-2);
+		line_fail(-2);
 		return -1;
 	}
 
@@ -157,7 +158,7 @@ int tf_read(int ID, size_t offset, void* dest, size_t data_size) {
 	void* data = malloc(data_size);
 	if (data == NULL) {
 		fclose(file);
-		fail_line(-3);
+		line_fail(-3);
 		return -1;
 	}
 
@@ -178,7 +179,7 @@ int tf_read(int ID, size_t offset, void* dest, size_t data_size) {
 	printf("Read: ID = %d, data = %016" PRIXPTR ", size = %zu -> '",
 		ID, (uintptr_t)dest, data_size);
 	for (size_t i = 0; i < data_size; i++)
-		printf("0x%02" PRIX8 " ", *((uint8_t*)(dest + i)));
+		printf("0x%02" PRIX8 " ", *((uint8_t*)((uint8_t*)dest + i)));
 	printf("'\n");
 #endif
 	return 0;