diff --git a/ChangeLog b/ChangeLog
index c67157128..66a8ce92f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -23,14 +23,14 @@ Security
      modules.
 
 Features
-   * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables additional
-     validation of parameters in the library's public interface. This does not
-     change the API of existing functions, but additional clarity has been
-     added to the defined documentation interface to make clearer what the
-     interface is designed to accept. See the corresponding API documentation
-     for each function to see what parameter values are defined as invalid.
-     This feature is disabled by default. See its API documentation in
-     config.h for additional steps you have to take when enabling it.
+   * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation
+     of parameters in the API. This allows detection of obvious misuses of the
+     API, such as passing NULL pointers. The API of existing functions hasn't
+     changed, but requirements on parameters have been made more explicit in
+     the documentation. See the corresponding API documentation for each
+     function to see for which parameter values it is defined. This feature is
+     disabled by default. See its API documentation in config.h for additional
+     steps you have to take when enabling it.
 
 API Changes
    * The following functions in the random generator modules have been