diff --git a/code/ryzom/tools/client/ryzom_installer/src/operationdialog.cpp b/code/ryzom/tools/client/ryzom_installer/src/operationdialog.cpp
index 6ea65aeeb..5f3215e31 100644
--- a/code/ryzom/tools/client/ryzom_installer/src/operationdialog.cpp
+++ b/code/ryzom/tools/client/ryzom_installer/src/operationdialog.cpp
@@ -793,9 +793,14 @@ void COperationDialog::uninstallOldClient()
 
 			if (button == QMessageBox::Yes)
 			{
+				// remember the choice
 				CConfigFile::getInstance()->setShouldUninstallOldClient(true);
 
+				// launch old uninstaller
 				QDesktopServices::openUrl(QUrl::fromLocalFile(uninstaller));
+
+				// to not ask twice
+				CConfigFile::getInstance()->setUninstallingOldClient(true);
 			}
 			else
 			{