diff --git a/content/base/src/CSPUtils.jsm b/content/base/src/CSPUtils.jsm
index c8cfa42e213c..1576fe3d649b 100644
--- a/content/base/src/CSPUtils.jsm
+++ b/content/base/src/CSPUtils.jsm
@@ -152,13 +152,9 @@ CSPPolicyURIListener.prototype = {
                              this._reportOnly, this._csp._specCompliant);
     }
     else {
-      // problem fetching policy so fail closed by appending a "block it all"
-      // policy.  Also toss an error into the console so developers can see why
-      // this policy is used.
-      this._csp.log(WARN_FLAG, CSPLocalizer.getFormatStr("errorFetchingPolicy",
-                                                         [status]);
-      this._csp.appendPolicy("default-src 'none'", this._docURI,
-                             this._reportOnly, this._csp._specCompliant);
+      // problem fetching policy so fail closed
+      this._csp.refinePolicy("default-src 'none'", this._docURI,
+                             this._csp._specCompliant);
     }
     // resume the parent document request
     this._docRequest.resume();