diff --git a/include/mbedtls/threading.h b/include/mbedtls/threading.h
index fbc7374..a56b3ff 100644
--- a/include/mbedtls/threading.h
+++ b/include/mbedtls/threading.h
@@ -32,14 +32,13 @@
 #endif
 
 /** Bad input parameters to function. */
-#define MBEDTLS_ERR_THREADING_BAD_INPUT_DATA              -0x001C
+#define MBEDTLS_ERR_THREADING_BAD_INPUT_DATA -0x001C
 /** Locking / unlocking / free failed with error code. */
-#define MBEDTLS_ERR_THREADING_MUTEX_ERROR                 -0x001E
+#define MBEDTLS_ERR_THREADING_MUTEX_ERROR -0x001E
 
 #if defined(MBEDTLS_THREADING_PTHREAD)
-#include <pthread.h>
-typedef struct mbedtls_threading_mutex_t
-{
+#    include <pthread.h>
+typedef struct mbedtls_threading_mutex_t {
     pthread_mutex_t MBEDTLS_PRIVATE(mutex);
     /* is_valid is 0 after a failed init or a free, and nonzero after a
      * successful init. This field is not considered part of the public
@@ -50,7 +49,7 @@
 
 #if defined(MBEDTLS_THREADING_ALT)
 /* You should define the mbedtls_threading_mutex_t type in your header */
-#include "threading_alt.h"
+#    include "threading_alt.h"
 
 /**
  * \brief           Set your alternate threading implementation function
@@ -70,15 +69,15 @@
  * \param mutex_lock    the lock function implementation
  * \param mutex_unlock  the unlock function implementation
  */
-void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t * ),
-                       void (*mutex_free)( mbedtls_threading_mutex_t * ),
-                       int (*mutex_lock)( mbedtls_threading_mutex_t * ),
-                       int (*mutex_unlock)( mbedtls_threading_mutex_t * ) );
+void mbedtls_threading_set_alt(void (*mutex_init)(mbedtls_threading_mutex_t *),
+                               void (*mutex_free)(mbedtls_threading_mutex_t *),
+                               int (*mutex_lock)(mbedtls_threading_mutex_t *),
+                               int (*mutex_unlock)(mbedtls_threading_mutex_t *));
 
 /**
  * \brief               Free global mutexes.
  */
-void mbedtls_threading_free_alt( void );
+void mbedtls_threading_free_alt(void);
 #endif /* MBEDTLS_THREADING_ALT */
 
 #if defined(MBEDTLS_THREADING_C)
@@ -87,19 +86,20 @@
  *
  * All these functions are expected to work or the result will be undefined.
  */
-extern void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t *mutex );
-extern void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t *mutex );
-extern int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t *mutex );
-extern int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t *mutex );
+extern void (*mbedtls_mutex_init)(mbedtls_threading_mutex_t *mutex);
+extern void (*mbedtls_mutex_free)(mbedtls_threading_mutex_t *mutex);
+extern int (*mbedtls_mutex_lock)(mbedtls_threading_mutex_t *mutex);
+extern int (*mbedtls_mutex_unlock)(mbedtls_threading_mutex_t *mutex);
 
 /*
  * Global mutexes
  */
-#if defined(MBEDTLS_FS_IO)
+#    if defined(MBEDTLS_FS_IO)
 extern mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex;
-#endif
+#    endif
 
-#if defined(MBEDTLS_HAVE_TIME_DATE) && !defined(MBEDTLS_PLATFORM_GMTIME_R_ALT)
+#    if defined(MBEDTLS_HAVE_TIME_DATE) && \
+        !defined(MBEDTLS_PLATFORM_GMTIME_R_ALT)
 /* This mutex may or may not be used in the default definition of
  * mbedtls_platform_gmtime_r(), but in order to determine that,
  * we need to check POSIX features, hence modify _POSIX_C_SOURCE.
@@ -107,7 +107,7 @@
  * an accompanying definition, in case mbedtls_platform_gmtime_r()
  * doesn't need it, but that's not a problem. */
 extern mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex;
-#endif /* MBEDTLS_HAVE_TIME_DATE && !MBEDTLS_PLATFORM_GMTIME_R_ALT */
+#    endif /* MBEDTLS_HAVE_TIME_DATE && !MBEDTLS_PLATFORM_GMTIME_R_ALT */
 
 #endif /* MBEDTLS_THREADING_C */