diff --git a/core/basethemelet.class.php b/core/basethemelet.class.php
index 2996200c..1f63525c 100644
--- a/core/basethemelet.class.php
+++ b/core/basethemelet.class.php
@@ -66,8 +66,8 @@ class BaseThemelet {
 
 		$custom_classes = "";
 		if(class_exists("Relationships")){
-			if(property_exists('Image', 'parent_id') && $image->parent_id !== NULL){	$custom_classes .= "shm-thumb-has_parent ";	}
-			if(property_exists('Image', 'has_children') && $image->has_children == TRUE){ $custom_classes .= "shm-thumb-has_child "; }
+			if(property_exists($image, 'parent_id') && $image->parent_id !== NULL){	$custom_classes .= "shm-thumb-has_parent ";	}
+			if(property_exists($image, 'has_children') && $image->has_children == TRUE){ $custom_classes .= "shm-thumb-has_child "; }
 		}
 
 		return "<a href='$h_view_link' class='thumb shm-thumb shm-thumb-link {$custom_classes}' data-tags='$h_tags' data-post-id='$i_id'>".