diff --git a/dom/base/nsGlobalWindow.cpp b/dom/base/nsGlobalWindow.cpp
index 9cf5873154e5..ba70a62b3df2 100644
--- a/dom/base/nsGlobalWindow.cpp
+++ b/dom/base/nsGlobalWindow.cpp
@@ -7063,6 +7063,9 @@ nsGlobalWindow::Find(const nsAString& aStr, bool aCaseSensitive,
                      bool aSearchInFrames, bool aShowDialog,
                      bool *aDidFind)
 {
+  if (Preferences::GetBool("dom.disable_window_find", false))
+    return NS_ERROR_NOT_AVAILABLE;
+
   FORWARD_TO_OUTER(Find, (aStr, aCaseSensitive, aBackwards, aWrapAround,
                           aWholeWord, aSearchInFrames, aShowDialog, aDidFind),
                    NS_ERROR_NOT_INITIALIZED);
diff --git a/dom/tests/mochitest/bugs/Makefile.in b/dom/tests/mochitest/bugs/Makefile.in
index b2f1802e80ed..754857614d7e 100644
--- a/dom/tests/mochitest/bugs/Makefile.in
+++ b/dom/tests/mochitest/bugs/Makefile.in
@@ -160,6 +160,7 @@ _TEST_FILES	= \
 		test_bug743615.html \
 		utils_bug743615.js \
 		worker_bug743615.js \
+		test_bug750051.html \
 		$(NULL)
 
 libs:: 	$(_TEST_FILES)
diff --git a/dom/tests/mochitest/bugs/test_bug750051.html b/dom/tests/mochitest/bugs/test_bug750051.html
new file mode 100644
index 000000000000..181233a41369
--- /dev/null
+++ b/dom/tests/mochitest/bugs/test_bug750051.html
@@ -0,0 +1,38 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=750051
+-->
+<head>
+  <title>Test for Bug 750051</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=750051">Mozilla Bug 750051</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 750051 **/
+
+SimpleTest.waitForExplicitFinish();
+
+SpecialPowers.pushPrefEnv({"set": [["dom.disable_window_find", true]]}, function() {
+  var caughtException = false;
+  try {
+    window.find();
+  } catch (e) {
+    caughtException = true;
+  }
+  ok(caughtException, "window.find should throw an exception");
+  SimpleTest.finish();
+});
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/mobile/android/app/mobile.js b/mobile/android/app/mobile.js
index 519226ed47d0..f53bb28a106f 100644
--- a/mobile/android/app/mobile.js
+++ b/mobile/android/app/mobile.js
@@ -252,6 +252,7 @@ pref("privacy.popups.showBrowserMessage", true);
 pref("dom.disable_window_open_dialog_feature", true);
 pref("dom.disable_window_showModalDialog", true);
 pref("dom.disable_window_print", true);
+pref("dom.disable_window_find", true);
 
 pref("keyword.enabled", true);
 pref("keyword.URL", "https://www.google.com/m?ie=UTF-8&oe=UTF-8&sourceid=navclient&gfns=1&q=");
