diff --git a/expand.c b/expand.c
index 257aa8c..19b3727 100755
--- a/expand.c
+++ b/expand.c
@@ -27,20 +27,20 @@ int main(int argc, char ** argv) {
     }
     else {
       while(is_integer(argv[j]) && j < (argc - 1)) {
-	num_tab_stops++;
-	i++;
-	j++;
+        num_tab_stops++;
+        i++;
+        j++;
       }
     
       tab_stops = calloc(num_tab_stops, sizeof(*tab_stops));
     
       for(j = 2; j < num_tab_stops + 2; j++) {
-	tab_stops[j-2] = stoi_mini(argv[j]);
+        tab_stops[j-2] = stoi_mini(argv[j]);
       }
     }
   }
   else if(argv[1][0] == '-' && argv[1][1] == 't' &&
-	  argv[1][2] <= '9' && argv[1][2] >= '0'){
+	        argv[1][2] <= '9' && argv[1][2] >= '0'){
     char * str = strtok(argv[1], "t");
     str = strtok(NULL, "\0");
     num_tab_stops = comma_list_num_stops(str);
@@ -62,38 +62,38 @@ int main(int argc, char ** argv) {
     else {
       cur_stop = 0; col_pos = 0;
       for(c = fgetc(current_file); c != EOF; c = fgetc(current_file)) {
-	if(c == '\t') {
-	  if(num_tab_stops == 1) {
-	    cur_stop++;
-	    printf(" "); col_pos++;
-	    while(col_pos % *tab_stops != 0) {
-	      printf(" "); col_pos++;
-	    }
-	  }
-	  else {
-	    if(cur_stop >= num_tab_stops) {
-	      printf(" ");
-	      col_pos++;
-	      cur_stop++;
-	    }
-	    else {
-	      printf(" "); col_pos++;
-	      while(col_pos % tab_stops[cur_stop] != 0) {
-		printf(" "); col_pos++;
-	      }
-	      cur_stop++;
-	    }
-	  }
-	}
-	else if(c == '\n') {
-	  printf("%c", c);
-	  col_pos = 0;
-	  cur_stop = 0;
-	}
-	else {
-	  printf("%c", c);
-	  col_pos++;
-	}
+        if(c == '\t') {
+          if(num_tab_stops == 1) {
+            cur_stop++;
+            printf(" "); col_pos++;
+            while(col_pos % *tab_stops != 0) {
+              printf(" "); col_pos++;
+            }
+          }
+          else {
+            if(cur_stop >= num_tab_stops) {
+              printf(" ");
+              col_pos++;
+              cur_stop++;
+            }
+            else {
+                printf(" "); col_pos++;
+                while(col_pos % tab_stops[cur_stop] != 0) {
+                  printf(" "); col_pos++;
+                }
+              cur_stop++;
+            }
+          }
+        }
+        else if(c == '\n') {
+          printf("%c", c);
+          col_pos = 0;
+          cur_stop = 0;
+        }
+        else {
+          printf("%c", c);
+          col_pos++;
+        }
       }
       fclose(current_file);
     }