diff --git a/js/components/ascribe_accordion_list/accordion_list_item_piece.js b/js/components/ascribe_accordion_list/accordion_list_item_piece.js
index 74322e51..006479c5 100644
--- a/js/components/ascribe_accordion_list/accordion_list_item_piece.js
+++ b/js/components/ascribe_accordion_list/accordion_list_item_piece.js
@@ -21,7 +21,7 @@ let AccordionListItemPiece = React.createClass({
         subsubheading: React.PropTypes.object,
         buttons: React.PropTypes.object,
         badge: React.PropTypes.object,
-        thumbnailPlaceholder: React.PropTypes.element
+        thumbnailPlaceholder: React.PropTypes.func
     },
 
     getDefaultProps() {
diff --git a/js/components/ascribe_accordion_list/accordion_list_item_wallet.js b/js/components/ascribe_accordion_list/accordion_list_item_wallet.js
index 6fb3abeb..a8cab166 100644
--- a/js/components/ascribe_accordion_list/accordion_list_item_wallet.js
+++ b/js/components/ascribe_accordion_list/accordion_list_item_wallet.js
@@ -31,7 +31,7 @@ let AccordionListItemWallet = React.createClass({
     propTypes: {
         className: React.PropTypes.string,
         content: React.PropTypes.object,
-        thumbnailPlaceholder: React.PropTypes.element,
+        thumbnailPlaceholder: React.PropTypes.func,
         children: React.PropTypes.oneOfType([
             React.PropTypes.arrayOf(React.PropTypes.element),
             React.PropTypes.element
diff --git a/js/components/piece_list.js b/js/components/piece_list.js
index 1d1875bd..9424117c 100644
--- a/js/components/piece_list.js
+++ b/js/components/piece_list.js
@@ -38,7 +38,7 @@ let PieceList = React.createClass({
         canLoadPieceList: React.PropTypes.bool,
         redirectTo: React.PropTypes.string,
         customSubmitButton: React.PropTypes.element,
-        customThumbnailPlaceholder: React.PropTypes.element,
+        customThumbnailPlaceholder: React.PropTypes.func,
         filterParams: React.PropTypes.array,
         orderParams: React.PropTypes.array,
         orderBy: React.PropTypes.string,
diff --git a/js/components/whitelabel/wallet/components/market/market_piece_list.js b/js/components/whitelabel/wallet/components/market/market_piece_list.js
index 8adaa6d9..1c74e6de 100644
--- a/js/components/whitelabel/wallet/components/market/market_piece_list.js
+++ b/js/components/whitelabel/wallet/components/market/market_piece_list.js
@@ -17,7 +17,7 @@ import { getLangText } from '../../../../../utils/lang_utils';
 
 let MarketPieceList = React.createClass({
     propTypes: {
-        customThumbnailPlaceholder: React.PropTypes.element,
+        customThumbnailPlaceholder: React.PropTypes.func,
         location: React.PropTypes.object
     },