diff --git a/include/mbedtls/base64.h b/include/mbedtls/base64.h
index cf4149e..ec9c408 100644
--- a/include/mbedtls/base64.h
+++ b/include/mbedtls/base64.h
@@ -58,8 +58,8 @@
  * \note           Call this function with dlen = 0 to obtain the
  *                 required buffer size in *olen
  */
-int mbedtls_base64_encode( unsigned char *dst, size_t dlen, size_t *olen,
-                   const unsigned char *src, size_t slen );
+int mbedtls_base64_encode(unsigned char *dst, size_t dlen, size_t *olen,
+                          const unsigned char *src, size_t slen);
 
 /**
  * \brief          Decode a base64-formatted buffer
@@ -78,8 +78,8 @@
  * \note           Call this function with *dst = NULL or dlen = 0 to obtain
  *                 the required buffer size in *olen
  */
-int mbedtls_base64_decode( unsigned char *dst, size_t dlen, size_t *olen,
-                   const unsigned char *src, size_t slen );
+int mbedtls_base64_decode(unsigned char *dst, size_t dlen, size_t *olen,
+                          const unsigned char *src, size_t slen);
 
 #if defined(MBEDTLS_SELF_TEST)
 /**
@@ -87,7 +87,7 @@
  *
  * \return         0 if successful, or 1 if the test failed
  */
-int mbedtls_base64_self_test( int verbose );
+int mbedtls_base64_self_test(int verbose);
 
 #endif /* MBEDTLS_SELF_TEST */