diff --git a/release/2.0.rst b/release/2.0.rst
index 22ed221..f270283 100644
--- a/release/2.0.rst
+++ b/release/2.0.rst
@@ -208,6 +208,9 @@
 *  IMSIs should not be removed from Simapp. They may be added at any
    time.
 
+*  When running the ROC GUI in the Firefox browser, it is possible to enter
+   non-numeric characters in to numeric fields.
+
 Component Versions
 ------------------