diff --git a/library/psa_crypto_slot_management.c b/library/psa_crypto_slot_management.c
index bab2a1a..4131e3c 100644
--- a/library/psa_crypto_slot_management.c
+++ b/library/psa_crypto_slot_management.c
@@ -392,7 +392,7 @@
             status = PSA_ERROR_INVALID_HANDLE;
     }
     else
-        /* Do the key usage policy extension. */
+        /* Add implicit usage flags. */
         psa_extend_key_usage_flags( &(*p_slot)->attr.policy.usage );
 
     return( status );