diff --git a/ci/win/build_installer.iss b/ci/win/build_installer.iss
index 23d9c753..2ba8e6bd 100644
--- a/ci/win/build_installer.iss
+++ b/ci/win/build_installer.iss
@@ -170,7 +170,7 @@ begin
   sUnInstallString := GetUninstallString();
   if sUnInstallString <> '' then begin
     sUnInstallString := RemoveQuotes(sUnInstallString);
-    if Exec(sUnInstallString, '/SILENT /NORESTART /SUPPRESSMSGBOXES','', SW_HIDE, ewWaitUntilTerminated, iResultCode) then
+    if Exec(sUnInstallString, '/VERYSILENT /NORESTART /SUPPRESSMSGBOXES','', SW_HIDE, ewWaitUntilTerminated, iResultCode) then
       Result := 3
     else
       Result := 2;
diff --git a/ci/win/build_installer_qt6.iss b/ci/win/build_installer_qt6.iss
index 3c518cfc..e44da531 100644
--- a/ci/win/build_installer_qt6.iss
+++ b/ci/win/build_installer_qt6.iss
@@ -174,7 +174,7 @@ begin
   sUnInstallString := GetUninstallString();
   if sUnInstallString <> '' then begin
     sUnInstallString := RemoveQuotes(sUnInstallString);
-    if Exec(sUnInstallString, '/SILENT /NORESTART /SUPPRESSMSGBOXES','', SW_HIDE, ewWaitUntilTerminated, iResultCode) then
+    if Exec(sUnInstallString, '/VERYSILENT /NORESTART /SUPPRESSMSGBOXES','', SW_HIDE, ewWaitUntilTerminated, iResultCode) then
       Result := 3
     else
       Result := 2;