diff --git a/src/wp-includes/js/media-views.js b/src/wp-includes/js/media-views.js
index bb2c949c73..ae9ea8e1d0 100644
--- a/src/wp-includes/js/media-views.js
+++ b/src/wp-includes/js/media-views.js
@@ -7724,9 +7724,11 @@ Toolbar = View.extend({
 				disabled = false;
 
 			// Prevent insertion of attachments if any of them are still uploading
-			disabled = _.some( selection.models, function( attachment ) {
-				return attachment.get('uploading') === true;
-			});
+			if ( selection && selection.models ) {
+				disabled = _.some( selection.models, function( attachment ) {
+					return attachment.get('uploading') === true;
+				});
+			}
 
 			if ( requires.selection && selection && ! selection.length ) {
 				disabled = true;
diff --git a/src/wp-includes/js/media/views/toolbar.js b/src/wp-includes/js/media/views/toolbar.js
index 7884a4b02d..e1884bf0a6 100644
--- a/src/wp-includes/js/media/views/toolbar.js
+++ b/src/wp-includes/js/media/views/toolbar.js
@@ -141,9 +141,11 @@ Toolbar = View.extend({
 				disabled = false;
 
 			// Prevent insertion of attachments if any of them are still uploading
-			disabled = _.some( selection.models, function( attachment ) {
-				return attachment.get('uploading') === true;
-			});
+			if ( selection && selection.models ) {
+				disabled = _.some( selection.models, function( attachment ) {
+					return attachment.get('uploading') === true;
+				});
+			}
 
 			if ( requires.selection && selection && ! selection.length ) {
 				disabled = true;