diff --git a/cmake/installer.iss.in b/cmake/installer.iss.in
index dc3bbcd..45ed283 100644
--- a/cmake/installer.iss.in
+++ b/cmake/installer.iss.in
@@ -10,7 +10,7 @@
 ; NOTE: The value of AppId uniquely identifies this application.
 ; Do not use the same AppId value in installers for other applications.
 ; (To generate a new GUID, click Tools | Generate GUID inside the IDE.)
-AppId={6559B77C-0F41-4F97-AC9D-2C13DE22D236}
+AppId={{6559B77C-0F41-4F97-AC9D-2C13DE22D236}}
 AppName={#MyAppName}
 AppVersion={#MyAppVersion}
 ;AppVerName={#MyAppName} {#MyAppVersion}