--- a/include/ecrt.h	Mon Dec 29 15:24:37 2008 +0000
+++ b/include/ecrt.h	Mon Dec 29 15:27:39 2008 +0000
@@ -751,7 +751,7 @@
  * \return Size of the process data image.
  */
 size_t ecrt_domain_size(
-        ec_domain_t *domain /**< Domain. */
+        const ec_domain_t *domain /**< Domain. */
         );
 
 /** Provide external memory to store the domain's process data.