diff --git a/documentation/releasenotes.rst b/documentation/releasenotes.rst
index e570086..cd98228 100644
--- a/documentation/releasenotes.rst
+++ b/documentation/releasenotes.rst
@@ -9,6 +9,9 @@ Release Notes
 * server: plug channel cache leak when close Channel while reusing Connection.
 * server: disable one-sided attempt to handle saturated connection.
 * ioc: add `pvxs_log_config()` and `pvxs_log_reset()` IOCsh functions.
+* ioc: renamed semi-internal C symbol names to avoid conflicts with QSRV1:
+       `dbpvar()` -> ``dbpvxr()`, ``pvaLinkNWorkers`` -> ``pvxLinkNWorkers``.
+       Names in IOC shell remain unchanged.
 * tools: pvxvct can use endpoint syntax to listen for multicast on a specific interface.
          eg. ``pvxvct -B 224.1.2.23@eth0`` or ``pvxvct -B 224.1.2.23@10.1.1.100``.