diff --git a/src/calibration.c b/src/calibration.c
index e4f6b59..47cf810 100644
--- a/src/calibration.c
+++ b/src/calibration.c
@@ -47,16 +47,20 @@ unsigned int get_calibration_sum(FILE *input_file) {
     unsigned int sum = 0;
     char *current_line, *reversed_line;
     char intermediate_buffer[3];
+
     intermediate_buffer[2] = '\0';
 
     while (!feof(input_file)) {
         current_line = read_line(input_file);
         reversed_line = strrev(current_line);
+
         if (*current_line != '\0') {
             intermediate_buffer[0] = first_digit(current_line);
             intermediate_buffer[1] = first_digit(reversed_line);
+
             sum += atoi(intermediate_buffer);
         }
+
         free(reversed_line);
         free(current_line);
     }