diff --git a/nl.c b/nl.c
index e705d2d..3a1e041 100644
--- a/nl.c
+++ b/nl.c
@@ -66,7 +66,7 @@ nl(const char *fname, FILE *fp)
 				donumber = 1;
 			break;
 		case 'p':
-		     	if (!regexec(preg + section, buf, 0, NULL, 0))
+			if (!regexec(preg + section, buf, 0, NULL, 0))
 				donumber = 1;
 			break;
 		case 'a':