diff --git a/include/openssl/seed.h b/include/openssl/seed.h
index 81533f203b..7d7b207ac7 100644
--- a/include/openssl/seed.h
+++ b/include/openssl/seed.h
@@ -44,31 +44,31 @@
 # include <openssl/opensslconf.h>
 
 # ifndef OPENSSL_NO_SEED
-# include <openssl/e_os2.h>
-# include <openssl/crypto.h>
+#  include <openssl/e_os2.h>
+#  include <openssl/crypto.h>
 
-#ifdef  __cplusplus
+#  ifdef  __cplusplus
 extern "C" {
-#endif
+#  endif
 
 /* look whether we need 'long' to get 32 bits */
-# ifdef AES_LONG
-#  ifndef SEED_LONG
-#   define SEED_LONG 1
+#  ifdef AES_LONG
+#   ifndef SEED_LONG
+#    define SEED_LONG 1
+#   endif
 #  endif
-# endif
 
-# include <sys/types.h>
+#  include <sys/types.h>
 
-# define SEED_BLOCK_SIZE 16
-# define SEED_KEY_LENGTH 16
+#  define SEED_BLOCK_SIZE 16
+#  define SEED_KEY_LENGTH 16
 
 typedef struct seed_key_st {
-# ifdef SEED_LONG
+#  ifdef SEED_LONG
     unsigned long data[32];
-# else
+#  else
     unsigned int data[32];
-# endif
+#  endif
 } SEED_KEY_SCHEDULE;
 
 void SEED_set_key(const unsigned char rawkey[SEED_KEY_LENGTH],
@@ -94,9 +94,9 @@ void SEED_ofb128_encrypt(const unsigned char *in, unsigned char *out,
                          size_t len, const SEED_KEY_SCHEDULE *ks,
                          unsigned char ivec[SEED_BLOCK_SIZE], int *num);
 
-# ifdef  __cplusplus
+#  ifdef  __cplusplus
 }
-# endif
+#  endif
 # endif
 
 #endif