diff --git a/code/AssetTableField.php b/code/AssetTableField.php
index 5870dab0..578793a3 100755
--- a/code/AssetTableField.php
+++ b/code/AssetTableField.php
@@ -93,13 +93,15 @@ class AssetTableField extends ComplexTableField {
 				'Main'
 			);
 			
-			$detailFormFields->addFieldToTab("BottomRoot", 
-				new Tab("Gallery Options",
-					new TextField( "Content", "Caption" )
-				)
-			);
+			if(class_exists('GalleryFile')) {
+				$detailFormFields->addFieldToTab("BottomRoot", 
+					new Tab("Gallery Options",
+						new TextField( "Content", "Caption" )
+					)
+				);
+			}
 		}
-		else {
+		else if (class_exists('GalleryFile')) {
 			if( $childData->Extension == 'swf' ) {
 				$detailFormFields->addFieldToTab("BottomRoot", 
 					new Tab("Gallery Options",