diff --git a/ww.c b/ww.c
index 67800ff..072e529 100644
--- a/ww.c
+++ b/ww.c
@@ -5,35 +5,35 @@
 int process_fn(int fn)
 {
     char c[1];
-		int seen_word=0;
-		int seen_sep_after_word=0;
-		int num_words = 0;
+    int seen_word = 0;
+    int seen_sep_after_word = 0;
+    int num_words = 0;
     while (read(fn, c, sizeof(c)) > 0) {
-				if(*c != '\n' && *c != ' ' && *c != '\t'){
-					seen_word = 1;
-				} else if(seen_word) {
-					seen_sep_after_word = 1;
-				} else {
-					// see a separator, but haven't seen a word: do nothing
-					// exercise: what happens if you only track seen_sep,
-					// instead of seen_sep_after_word?
-					// test with: $ echo " x x" | ./wc
-				}
-				if(seen_word && seen_sep_after_word){
-					num_words++;
-					seen_sep_after_word = seen_word = 0;
-				}
+        if (*c != '\n' && *c != ' ' && *c != '\t') {
+            seen_word = 1;
+        } else if (seen_word) {
+            seen_sep_after_word = 1;
+        } else {
+            // see a separator, but haven't seen a word: do nothing
+            // exercise: what happens if you only track seen_sep,
+            // instead of seen_sep_after_word?
+            // test with: $ echo " x x" | ./wc
+        }
+        if (seen_word && seen_sep_after_word) {
+            num_words++;
+            seen_sep_after_word = seen_word = 0;
+        }
     }
-		if(seen_word){
-			num_words++;
-		}
-		printf("%i\n",num_words);
+    if (seen_word) {
+        num_words++;
+    }
+    printf("%i\n", num_words);
     return 0;
 }
 
 int main(int argc, char** argv)
 {
-		if (!isatty(STDIN_FILENO)) {
+    if (!isatty(STDIN_FILENO)) {
         return process_fn(STDIN_FILENO);
     } else if (argc > 1) {
         FILE* fp = fopen(argv[1], "r");
@@ -44,7 +44,7 @@ int main(int argc, char** argv)
         return process_fn(fileno(fp));
     } else {
         printf("Usage: ww file.txt\n");
-				printf("   or: cat file.txt | ww\n");
+        printf("   or: cat file.txt | ww\n");
     }
     return 0;
 }