--- a/mobile/android/base/java/org/mozilla/gecko/overlays/ui/ShareDialog.java
+++ b/mobile/android/base/java/org/mozilla/gecko/overlays/ui/ShareDialog.java
@@ -60,21 +60,20 @@ public class ShareDialog extends Locales
             AppConstants.ANDROID_PACKAGE_NAME + ".intent.extra.DEVICES_ONLY";
 
     /** The maximum number of devices we'll show in the dialog when in State.DEFAULT. **/
     private static final int MAXIMUM_INLINE_DEVICES = 2;
 
     private State state;
 
     private SendTabList sendTabList;
-    private OverlayDialogButton readingListButton;
     private OverlayDialogButton bookmarkButton;
 
-    // The reading list drawable set from XML - we need this to reset state.
-    private Drawable readingListButtonDrawable;
+    // The bookmark button drawable set from XML - we need this to reset state.
+    private Drawable bookmarkButtonDrawable;
 
     private String url;
     private String title;
 
     // The override intent specified by SendTab (if any). See SendTab.java.
     private Intent sendTabOverrideIntent;
 
     // Flag set during animation to prevent animation multiple-start.
@@ -124,17 +123,17 @@ public class ShareDialog extends Locales
             sendTabList.switchState(SendTabList.State.LIST);
 
             // The first item in the list has a unique style. If there are no items
             // in the list, the next button appears to be the first item in the list.
             //
             // Note: a more thorough implementation would add this
             // (and other non-ListView buttons) into a custom ListView.
             if (remoteClientRecords == null || remoteClientRecords.length == 0) {
-                readingListButton.setBackgroundResource(
+                bookmarkButton.setBackgroundResource(
                         R.drawable.overlay_share_button_background_first);
             }
             return;
         }
 
         // Just show a button to launch the list of devices to choose from.
         sendTabList.switchState(SendTabList.State.SHOW_DEVICES);
     }
@@ -176,52 +175,42 @@ public class ShareDialog extends Locales
         sendTabList = (SendTabList) findViewById(R.id.overlay_send_tab_btn);
 
         // Register ourselves as both the listener and the context for the Adapter.
         final SendTabDeviceListArrayAdapter adapter = new SendTabDeviceListArrayAdapter(this, this);
         sendTabList.setAdapter(adapter);
         sendTabList.setSendTabTargetSelectedListener(this);
 
         bookmarkButton = (OverlayDialogButton) findViewById(R.id.overlay_share_bookmark_btn);
-        readingListButton = (OverlayDialogButton) findViewById(R.id.overlay_share_reading_list_btn);
 
-        readingListButtonDrawable = readingListButton.getBackground();
+        bookmarkButtonDrawable = bookmarkButton.getBackground();
 
         // Bookmark button
         bookmarkButton = (OverlayDialogButton) findViewById(R.id.overlay_share_bookmark_btn);
         bookmarkButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
                 addBookmark();
             }
         });
-
-        // Reading List button
-        readingListButton = (OverlayDialogButton) findViewById(R.id.overlay_share_reading_list_btn);
-        readingListButton.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View view) {
-                addToReadingList();
-            }
-        });
     }
 
     @Override
     protected void onResume() {
         super.onResume();
 
         final Intent intent = getIntent();
 
         state = intent.getBooleanExtra(INTENT_EXTRA_DEVICES_ONLY, false) ?
                 State.DEVICES_ONLY : State.DEFAULT;
 
         // If the Activity is being reused, we need to reset the state. Ideally, we create a
         // new instance for each call, but Android L breaks this (bug 1137928).
         sendTabList.switchState(SendTabList.State.LOADING);
-        readingListButton.setBackgroundDrawable(readingListButtonDrawable);
+        bookmarkButton.setBackgroundDrawable(bookmarkButtonDrawable);
 
         // The URL is usually hiding somewhere in the extra text. Extract it.
         final String extraText = ContextUtils.getStringExtra(intent, Intent.EXTRA_TEXT);
         if (TextUtils.isEmpty(extraText)) {
             abortDueToNoURL();
             return;
         }
 
@@ -266,25 +255,23 @@ public class ShareDialog extends Locales
         subtitleView.setSingleLine(true);
         subtitleView.setMarqueeRepeatLimit(5);
         subtitleView.setSelected(true);
 
         final View titleView = findViewById(R.id.title);
 
         if (state == State.DEVICES_ONLY) {
             bookmarkButton.setVisibility(View.GONE);
-            readingListButton.setVisibility(View.GONE);
 
             titleView.setOnClickListener(null);
             subtitleView.setOnClickListener(null);
             return;
         }
 
         bookmarkButton.setVisibility(View.VISIBLE);
-        readingListButton.setVisibility(View.VISIBLE);
 
         // Configure buttons.
         final View.OnClickListener launchBrowser = new View.OnClickListener() {
             @Override
             public void onClick(View view) {
                 ShareDialog.this.launchBrowser();
             }
         };
@@ -307,32 +294,29 @@ public class ShareDialog extends Locales
     /**
      * Sets the state of the bookmark/reading list buttons: they are disabled if the given URL is
      * already in the corresponding list.
      */
     private void setButtonState(final String pageURL, final LocalBrowserDB browserDB) {
         new UIAsyncTask.WithoutParams<Void>(ThreadUtils.getBackgroundHandler()) {
             // Flags to hold the result
             boolean isBookmark;
-            boolean isReadingListItem;
 
             @Override
             protected Void doInBackground() {
                 final ContentResolver contentResolver = getApplicationContext().getContentResolver();
 
                 isBookmark = browserDB.isBookmark(contentResolver, pageURL);
-                isReadingListItem = browserDB.getReadingListAccessor().isReadingListItem(contentResolver, pageURL);
 
                 return null;
             }
 
             @Override
             protected void onPostExecute(Void aVoid) {
                 findViewById(R.id.overlay_share_bookmark_btn).setEnabled(!isBookmark);
-                findViewById(R.id.overlay_share_reading_list_btn).setEnabled(!isReadingListItem);
             }
         }.execute();
     }
 
     /**
      * Helper method to get an overlay service intent populated with the data held in this dialog.
      */
     private Intent getServiceIntent(ShareMethod.Type method) {
@@ -394,23 +378,16 @@ public class ShareDialog extends Locales
         serviceIntent.putExtra(OverlayConstants.EXTRA_PARAMETERS, extraParameters);
 
         startService(serviceIntent);
         animateOut(true);
 
         Telemetry.sendUIEvent(TelemetryContract.Event.SHARE, TelemetryContract.Method.SHARE_OVERLAY, "sendtab");
     }
 
-    public void addToReadingList() {
-        startService(getServiceIntent(ShareMethod.Type.ADD_TO_READING_LIST));
-        animateOut(true);
-
-        Telemetry.sendUIEvent(TelemetryContract.Event.SAVE, TelemetryContract.Method.SHARE_OVERLAY, "reading_list");
-    }
-
     public void addBookmark() {
         startService(getServiceIntent(ShareMethod.Type.ADD_BOOKMARK));
         animateOut(true);
 
         Telemetry.sendUIEvent(TelemetryContract.Event.SAVE, TelemetryContract.Method.SHARE_OVERLAY, "bookmark");
     }
 
     public void launchBrowser() {

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--- a/mobile/android/base/resources/drawable/overlay_share_reading_list_button.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item
-        android:state_enabled="false"
-        android:drawable="@drawable/overlay_readinglist_already_icon"/>
-    <item
-        android:drawable="@drawable/overlay_readinglist_icon"/>
-</selector>

--- a/mobile/android/base/resources/layout/overlay_share_dialog.xml
+++ b/mobile/android/base/resources/layout/overlay_share_dialog.xml
@@ -47,27 +47,16 @@
         <!-- "Send to Firefox Sync" -->
         <org.mozilla.gecko.overlays.ui.SendTabList
             android:id="@+id/overlay_send_tab_btn"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:orientation="vertical"
             android:divider="@null"/>
 
-        <!-- "Add to reading list" -->
-        <org.mozilla.gecko.overlays.ui.OverlayDialogButton
-            style="@style/ShareOverlayRow"
-            android:id="@+id/overlay_share_reading_list_btn"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:enabled="false"
-            gecko:drawable="@drawable/overlay_share_reading_list_button"
-            gecko:enabledText="@string/overlay_share_reading_list_btn_label"
-            gecko:disabledText="@string/overlay_share_reading_list_btn_label_already"/>
-
         <!-- "Add bookmark" -->
         <org.mozilla.gecko.overlays.ui.OverlayDialogButton
             style="@style/ShareOverlayRow"
             android:id="@+id/overlay_share_bookmark_btn"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:enabled="false"
             gecko:drawable="@drawable/overlay_share_bookmark_button"