diff --git a/library/entropy_poll.h b/library/entropy_poll.h
index aef1a09..3cfd4a4 100644
--- a/library/entropy_poll.h
+++ b/library/entropy_poll.h
@@ -42,8 +42,8 @@
 /**
  * \brief           Platform-specific entropy poll callback
  */
-int mbedtls_platform_entropy_poll( void *data,
-                           unsigned char *output, size_t len, size_t *olen );
+int mbedtls_platform_entropy_poll(void *data,
+                                  unsigned char *output, size_t len, size_t *olen);
 #endif
 
 #if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
@@ -55,8 +55,8 @@
  *
  * \note            This must accept NULL as its first argument.
  */
-int mbedtls_hardware_poll( void *data,
-                           unsigned char *output, size_t len, size_t *olen );
+int mbedtls_hardware_poll(void *data,
+                          unsigned char *output, size_t len, size_t *olen);
 #endif
 
 #if defined(MBEDTLS_ENTROPY_NV_SEED)
@@ -65,8 +65,8 @@
  *
  * \note            This must accept NULL as its first argument.
  */
-int mbedtls_nv_seed_poll( void *data,
-                          unsigned char *output, size_t len, size_t *olen );
+int mbedtls_nv_seed_poll(void *data,
+                         unsigned char *output, size_t len, size_t *olen);
 #endif
 
 #ifdef __cplusplus