--- a/lib/fileblocks.c
+++ b/lib/fileblocks.c
@@ -18,26 +18,26 @@
 /* Written by Brian L. Matthews, blm@6sceng.UUCP. */
 
 #ifdef HAVE_CONFIG_H
-#include <config.h>
+# include <config.h>
 #endif
 
 #if !defined (HAVE_ST_BLOCKS) && !defined(_POSIX_VERSION)
-#include <sys/types.h>
-#include <sys/param.h>
+# include <sys/types.h>
+# include <sys/param.h>
 
-#ifndef NINDIR
+# ifndef NINDIR
 /* Some SysV's, like Irix, seem to lack these.  Hope they're correct. */
 /* Size of a indirect block, in bytes. */
-#ifndef BSIZE
-#define BSIZE 1024
-#endif
+#  ifndef BSIZE
+#   define BSIZE 1024
+#  endif
 
 /* Number of inode pointers per indirect block. */
-#define NINDIR (BSIZE/sizeof(daddr_t))
-#endif /* !NINDIR */
+#  define NINDIR (BSIZE/sizeof(daddr_t))
+# endif /* !NINDIR */
 
 /* Number of direct block addresses in an inode. */
-#define NDIR	10
+# define NDIR	10
 
 /* Return the number of 512-byte blocks in a file of SIZE bytes. */