diff --git a/src/jschannel.js b/src/jschannel.js
index a4f6ba22..249fa1d3 100644
--- a/src/jschannel.js
+++ b/src/jschannel.js
@@ -253,6 +253,8 @@
                 else if (null !== (oMatch = cfg.origin.match(/^https?:\/\/(?:[-a-zA-Z0-9_\.])+(?::\d+)?/))) {
                     cfg.origin = oMatch[0].toLowerCase();
                     validOrigin = true;
+                } else if (cfg.origin == "resource://pdf.js") {
+                    validOrigin = true
                 }
             }