diff --git a/include/mbedtls/xtea.h b/include/mbedtls/xtea.h
index 4bdc711..9b12a1b 100644
--- a/include/mbedtls/xtea.h
+++ b/include/mbedtls/xtea.h
@@ -52,8 +52,7 @@
 /**
  * \brief          XTEA context structure
  */
-typedef struct mbedtls_xtea_context
-{
+typedef struct mbedtls_xtea_context {
     uint32_t k[4];       /*!< key */
 }
 mbedtls_xtea_context;
@@ -67,14 +66,14 @@
  *
  * \param ctx      XTEA context to be initialized
  */
-void mbedtls_xtea_init( mbedtls_xtea_context *ctx );
+void mbedtls_xtea_init(mbedtls_xtea_context *ctx);
 
 /**
  * \brief          Clear XTEA context
  *
  * \param ctx      XTEA context to be cleared
  */
-void mbedtls_xtea_free( mbedtls_xtea_context *ctx );
+void mbedtls_xtea_free(mbedtls_xtea_context *ctx);
 
 /**
  * \brief          XTEA key schedule
@@ -82,7 +81,7 @@
  * \param ctx      XTEA context to be initialized
  * \param key      the secret key
  */
-void mbedtls_xtea_setup( mbedtls_xtea_context *ctx, const unsigned char key[16] );
+void mbedtls_xtea_setup(mbedtls_xtea_context *ctx, const unsigned char key[16]);
 
 /**
  * \brief          XTEA cipher function
@@ -94,10 +93,10 @@
  *
  * \return         0 if successful
  */
-int mbedtls_xtea_crypt_ecb( mbedtls_xtea_context *ctx,
-                    int mode,
-                    const unsigned char input[8],
-                    unsigned char output[8] );
+int mbedtls_xtea_crypt_ecb(mbedtls_xtea_context *ctx,
+                           int mode,
+                           const unsigned char input[8],
+                           unsigned char output[8]);
 
 #if defined(MBEDTLS_CIPHER_MODE_CBC)
 /**
@@ -113,12 +112,12 @@
  * \return         0 if successful,
  *                 MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH if the length % 8 != 0
  */
-int mbedtls_xtea_crypt_cbc( mbedtls_xtea_context *ctx,
-                    int mode,
-                    size_t length,
-                    unsigned char iv[8],
-                    const unsigned char *input,
-                    unsigned char *output);
+int mbedtls_xtea_crypt_cbc(mbedtls_xtea_context *ctx,
+                           int mode,
+                           size_t length,
+                           unsigned char iv[8],
+                           const unsigned char *input,
+                           unsigned char *output);
 #endif /* MBEDTLS_CIPHER_MODE_CBC */
 
 #if defined(MBEDTLS_SELF_TEST)
@@ -128,7 +127,7 @@
  *
  * \return         0 if successful, or 1 if the test failed
  */
-int mbedtls_xtea_self_test( int verbose );
+int mbedtls_xtea_self_test(int verbose);
 
 #endif /* MBEDTLS_SELF_TEST */