diff --git a/classes/class-wpcom-liveblog-amp.php b/classes/class-wpcom-liveblog-amp.php
index 83dc004df..66114cb6c 100644
--- a/classes/class-wpcom-liveblog-amp.php
+++ b/classes/class-wpcom-liveblog-amp.php
@@ -88,7 +88,14 @@ public static function add_custom_query_vars( $query_vars ) {
 	public static function add_social_share_options() {
 		$social_array = array( 'twitter', 'pinterest', 'email', 'gplus' );
 
-		if ( defined( 'LIVEBLOG_AMP_FACEBOOK_SHARE' ) ) {
+		/**
+		 * Filter Liveblog AMP Facebook share app id
+		 *
+		 * @param mixed $app_id Facebook app id to enable Facebook sharing, default false.
+		 */
+		$facebook_app_id = apply_filters( 'liveblog_amp_facebook_share_app_id', false );
+
+		if ( ! empty( $facebook_app_id ) ) {
 			$social_array[] = 'facebook';
 		}
 
diff --git a/templates/amp/entry.php b/templates/amp/entry.php
index 073a43922..5db097f2e 100644
--- a/templates/amp/entry.php
+++ b/templates/amp/entry.php
@@ -7,6 +7,9 @@
 	$share_link     = $this->get( 'share_link' );
 	$update_time    = $this->get( 'update_time' );
 	$share_link_amp = $this->get( 'share_link_amp' );
+
+	/* This filter is defined in class-wpcom-liveblog-amp.php */
+	$facebook_app_id = apply_filters( 'liveblog_amp_facebook_share_app_id', false );
 ?>
 
 <div class="liveblog-entry" id="post<?php echo esc_attr( $update_time ); ?>"
@@ -64,7 +67,11 @@
 				<amp-social-share type="<?php echo esc_attr( $platform ); ?>"
 					width="45"
 					height="33"
-					data-param-url="<?php echo esc_url( $share_link_amp ); ?>"></amp-social-share>
+					data-param-url="<?php echo esc_url( $share_link_amp ); ?>"
+					<?php if ( 'facebook' === $platform ) : ?>
+						data-param-app_id="<?php echo esc_attr( $facebook_app_id ); ?>"
+					<?php endif; ?>
+				></amp-social-share>
 				<?php endforeach; ?>
 			<?php endif; ?>
 		</div>