diff --git a/include/mbedtls/error.h b/include/mbedtls/error.h
index aabbe6c..6296cd3 100644
--- a/include/mbedtls/error.h
+++ b/include/mbedtls/error.h
@@ -151,8 +151,8 @@
  *
  * \param high      high-level error code. See error.h for more details.
  * \param low       low-level error code. See error.h for more details.
- * \param file      file where this error code addition occured.
- * \param line      line where this error code addition occured.
+ * \param file      file where this error code addition occurred.
+ * \param line      line where this error code addition occurred.
  */
 static inline int mbedtls_error_add( int high, int low,
                                      const char *file, int line )