diff --git a/library/psa_crypto_random_impl.h b/library/psa_crypto_random_impl.h
index 8c745da..07e1d10 100644
--- a/library/psa_crypto_random_impl.h
+++ b/library/psa_crypto_random_impl.h
@@ -167,7 +167,7 @@
 
 /** A pointer to the PSA DRBG state.
  *
- * This macro expnds to an expression that is suitable as the \c p_rng
+ * This macro expands to an expression that is suitable as the \c p_rng
  * parameter to pass to mbedtls_psa_get_random().
  *
  * This macro exists in all configurations where the psa_crypto module is