diff --git a/RELEASE_NOTES.html b/RELEASE_NOTES.html
index d704573d6..c8f01dddb 100644
--- a/RELEASE_NOTES.html
+++ b/RELEASE_NOTES.html
@@ -186,7 +186,8 @@ and MC68360 processors. RTEMS also supports powerPC.
 <li>
 solaris</li>
 
-<br>Has been tested on solaris 2.6 and solaris 8.
+<br>Has been tested on solaris 2.6 and solaris 8 with Sun workshop 6.0 (C++ 5.2). 
+Sun workshop 5.0 (C++ 5.0) will not compile this version of EPICS.
 <li>
 Linux</li>