diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index a8bc45ea9b..d48df66e5b 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -1581,8 +1581,8 @@
  *
  * \note Enabling this option increases memory usage and code size.
  *
- * \note Enabling this option enables full support for overlap of input and
- *       output buffers passed to PSA functions.
+ * \note Disabling this option causes overlap of input and output buffers
+ *       not to be supported by PSA functions.
  */
 #define MBEDTLS_PSA_COPY_CALLER_BUFFERS