diff --git a/dom/events/test/test_error_events.html b/dom/events/test/test_error_events.html
index b75c0160e2dd..1d47e5398b7d 100644
--- a/dom/events/test/test_error_events.html
+++ b/dom/events/test/test_error_events.html
@@ -55,14 +55,14 @@
     if (msg.data.type == "event") {
       eventFileTest.step(function() { assert_equals(msg.data.filename, workerLocation); });
       eventFileTest.done();
-      eventLineTest.step(function() { assert_equals(msg.data.lineno, 15); });
+      eventLineTest.step(function() { assert_equals(msg.data.lineno, 19); });
       eventLineTest.done();
       eventMessageTest.step(function() { assert_equals(msg.data.message, "Error: workerhello"); });
       eventMessageTest.done();
     } else {
       callbackFileTest.step(function() { assert_equals(msg.data.filename, workerLocation); });
       callbackFileTest.done();
-      callbackLineTest.step(function() { assert_equals(msg.data.lineno, 15); });
+      callbackLineTest.step(function() { assert_equals(msg.data.lineno, 19); });
       callbackLineTest.done();
       callbackMessageTest.step(function() { assert_equals(msg.data.message, "Error: workerhello"); });
       callbackMessageTest.done();
diff --git a/dom/workers/test/test_sharedWorker.html b/dom/workers/test/test_sharedWorker.html
index a1bd606f25f2..b8ced379d53d 100644
--- a/dom/workers/test/test_sharedWorker.html
+++ b/dom/workers/test/test_sharedWorker.html
@@ -22,7 +22,7 @@
         const sentMessage = "ping";
         const errorFilename = href.substring(0, href.lastIndexOf("/") + 1) +
                               filename;
-        const errorLine = 90;
+        const errorLine = 97;
         const errorColumn = 11;
 
         var worker = new SharedWorker(filename);