diff --git a/config templates/web.config b/config templates/web.config
index ef8006faae..7cfce4353a 100644
--- a/config templates/web.config	
+++ b/config templates/web.config	
@@ -217,6 +217,7 @@
 
     <!-- Adobe AIR mime type -->
     <staticContent>
+      <remove fileExtension=".air" />
       <mimeMap fileExtension=".air" mimeType="application/vnd.adobe.air-application-installer-package+zip" />
     </staticContent>
   </system.webServer>
diff --git a/umbraco/presentation/web.config b/umbraco/presentation/web.config
index 5f767b3e3e..42ef8a0547 100644
--- a/umbraco/presentation/web.config
+++ b/umbraco/presentation/web.config
@@ -207,6 +207,7 @@
       <add verb="GET,HEAD,POST" preCondition="integratedMode" name="SpellChecker" path="GoogleSpellChecker.ashx" type="umbraco.presentation.umbraco_client.tinymce3.plugins.spellchecker.GoogleSpellChecker,umbraco" />
     </handlers>
     <staticContent>
+      <remove fileExtension=".air" />
       <mimeMap fileExtension=".air" mimeType="application/vnd.adobe.air-application-installer-package+zip" />
     </staticContent>
   </system.webServer>