diff --git a/toolkit/components/console/hudservice/HUDService.jsm b/toolkit/components/console/hudservice/HUDService.jsm
index 7e44b3d69d5..15d459a88c5 100644
--- a/toolkit/components/console/hudservice/HUDService.jsm
+++ b/toolkit/components/console/hudservice/HUDService.jsm
@@ -707,7 +707,11 @@ function createAndAppendElement(aParent, aTag, aAttributes)
 
 function unwrap(aObject)
 {
-  return XPCNativeWrapper.unwrap(aObject);
+  try {
+    return XPCNativeWrapper.unwrap(aObject);
+  } catch(e) {
+    return aObject;
+  }
 }
 
 ///////////////////////////////////////////////////////////////////////////
diff --git a/toolkit/components/console/hudservice/tests/browser/browser_webconsole_jsterm.js b/toolkit/components/console/hudservice/tests/browser/browser_webconsole_jsterm.js
index fff32cbc32e..30852331e02 100644
--- a/toolkit/components/console/hudservice/tests/browser/browser_webconsole_jsterm.js
+++ b/toolkit/components/console/hudservice/tests/browser/browser_webconsole_jsterm.js
@@ -137,5 +137,11 @@ function testJSTerm()
   let labels = jsterm.outputNode.querySelectorAll(".jsterm-output-line");
   ok(labels.length, "more than 0 lines of output for keys(window)");
 
+  jsterm.clearOutput();
+  jsterm.execute("pprint('hi')");
+  // Doesn't conform to checkResult format, bug 614561
+  let label = jsterm.outputNode.querySelector(".jsterm-output-line");
+  is(label.textContent.trim(), '0: "h"\n  1: "i"', 'pprint("hi") worked');
+
   finishTest();
 }