diff --git a/setup/nzbdrone.iss b/setup/nzbdrone.iss
index 382247219..9e3947c2c 100644
--- a/setup/nzbdrone.iss
+++ b/setup/nzbdrone.iss
@@ -25,7 +25,7 @@ DefaultDirName={commonappdata}\Radarr\bin
 DisableDirPage=yes
 DefaultGroupName={#AppName}
 DisableProgramGroupPage=yes
-OutputBaseFilename=Radarr.{#BranchName}.{#BuildVersion}
+OutputBaseFilename=Radarr.{#BranchName}.{#BuildVersion}.installer
 SolidCompression=yes
 AppCopyright=Creative Commons 3.0 License
 AllowUNCPath=False