diff --git a/library/psa_crypto_mac.h b/library/psa_crypto_mac.h
index a821e74..21c4de6 100644
--- a/library/psa_crypto_mac.h
+++ b/library/psa_crypto_mac.h
@@ -164,7 +164,7 @@
 psa_status_t mbedtls_psa_mac_update(
     mbedtls_psa_mac_operation_t *operation,
     const uint8_t *input,
-    size_t input_length );
+    size_t input_length);
 
 /** Finish the calculation of the MAC of a message using Mbed TLS.
  *
@@ -207,7 +207,7 @@
     mbedtls_psa_mac_operation_t *operation,
     uint8_t *mac,
     size_t mac_size,
-    size_t *mac_length );
+    size_t *mac_length);
 
 /** Finish the calculation of the MAC of a message and compare it with
  * an expected value using Mbed TLS.
@@ -247,7 +247,7 @@
 psa_status_t mbedtls_psa_mac_verify_finish(
     mbedtls_psa_mac_operation_t *operation,
     const uint8_t *mac,
-    size_t mac_length );
+    size_t mac_length);
 
 /** Abort a MAC operation using Mbed TLS.
  *
@@ -271,6 +271,6 @@
  * \retval #PSA_ERROR_CORRUPTION_DETECTED
  */
 psa_status_t mbedtls_psa_mac_abort(
-    mbedtls_psa_mac_operation_t *operation );
+    mbedtls_psa_mac_operation_t *operation);
 
 #endif /* PSA_CRYPTO_MAC_H */