diff --git a/ReleaseNotes.md b/ReleaseNotes.md
index 35c4773fc992c079e167f66f150782de2860487e..b3036cf8b844b52c11b233a2bd52b302c2a09229 100644
--- a/ReleaseNotes.md
+++ b/ReleaseNotes.md
@@ -2,8 +2,10 @@
 
 Contact: <jacques.grelet@ird.fr>
 
-## v1.50RC2 (2019-01-11)
+## v1.50RC2 (2019-01-15)
 
++ add a dialog box to download the m_map toolbox if it is not installed
++ fix issue #2, undo menu enable when automatic QC is apply first improve redo usage and menu setting, correct a bug inside QC_SelectCallback function: tsg.qc_history_pointer was use to enable redo menu instead off  tsg.qc_redo_possible
 + add a dialog box to donwload the m_map toolbox if it is not installed
 + fix issue #12, resolve a bug with all print menus with Matlab version prior 8.4 (R2014). Menu print and Print preview are disable for these versions and saveas was replaced by screencapture function from  "undocumented Matlab" web site.
 + add version date on the main TSQGQC figure