diff --git a/include/mbedtls/mbedtls_config.h b/include/mbedtls/mbedtls_config.h
index e8a270586..c2335bcc3 100644
--- a/include/mbedtls/mbedtls_config.h
+++ b/include/mbedtls/mbedtls_config.h
@@ -1273,7 +1273,7 @@
  * Enable an implementation of SHA-256 that has lower ROM footprint but also
  * lower performance.
  *
- * The default implementation is meant to be a reasonnable compromise between
+ * The default implementation is meant to be a reasonable compromise between
  * performance and size. This version optimizes more aggressively for size at
  * the expense of performance. Eg on Cortex-M4 it reduces the size of
  * mbedtls_sha256_process() from ~2KB to ~0.5KB for a performance hit of about
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 9566ff6be..9b29c85ff 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -4827,7 +4827,7 @@ int mbedtls_ssl_context_load( mbedtls_ssl_context *ssl,
 void mbedtls_ssl_config_init( mbedtls_ssl_config *conf );
 
 /**
- * \brief          Load reasonnable default SSL configuration values.
+ * \brief          Load reasonable default SSL configuration values.
  *                 (You need to call mbedtls_ssl_config_init() first.)
  *
  * \param conf     SSL configuration context