diff --git a/mozilla/extensions/inspector/resources/content/inspector.xml b/mozilla/extensions/inspector/resources/content/inspector.xml
index 2e92ec08279..e2272256e69 100644
--- a/mozilla/extensions/inspector/resources/content/inspector.xml
+++ b/mozilla/extensions/inspector/resources/content/inspector.xml
@@ -394,7 +394,8 @@
       </xul:toolbox>
       <xul:box class="viewer-pane-box-1" flex="1">
         <xul:box class="viewer-pane-box-2" flex="1">
-          <xul:browser anonid="viewer-iframe" disablehistory="true" class="viewer-iframe" flex="1"/>
+          <xul:browser anonid="viewer-iframe" class="viewer-iframe"
+                       disablehistory="true" disablesecurity="true" flex="1"/>
         </xul:box>
       </xul:box>
     </content>
diff --git a/mozilla/extensions/inspector/resources/content/inspectorOverlay.xul b/mozilla/extensions/inspector/resources/content/inspectorOverlay.xul
index a5fd2a63ad2..0b97bf5496e 100644
--- a/mozilla/extensions/inspector/resources/content/inspectorOverlay.xul
+++ b/mozilla/extensions/inspector/resources/content/inspectorOverlay.xul
@@ -47,7 +47,9 @@
         label="Browser" closebutton="true" collapse="after"/>
         
     <hbox id="bxBrowser" flex="1">
-      <browser id="ifBrowser" type="content-primary" disablehistory="true" flex="1" src="about:blank"/>
+      <browser id="ifBrowser" type="content-primary"
+               disablehistory="true" disablesecurity="true"
+               flex="1" src="about:blank"/>
     </hbox>
 
     <!--
@@ -61,7 +63,7 @@
       </tree>
     
       TEMPORARY UNTIL FIX FOR 54237
-      <browser id="inSearchServiceLoader" disablehistory="true" height="1"/>
+      <browser id="inSearchServiceLoader" disablehistory="true" disablesecurity="true" height="1"/>
     </vbox>
     -->
   </vbox>