diff --git a/includes/webform.webformconditionals.inc b/includes/webform.webformconditionals.inc
index b1a42cb..0daa898 100644
--- a/includes/webform.webformconditionals.inc
+++ b/includes/webform.webformconditionals.inc
@@ -370,6 +370,7 @@ class WebformConditionals {
 
           // Perform the comparison callback and build the results for this group.
           $comparison_callback = $operator_info[$rule['operator']]['comparison callback'];
+          webform_component_include($source_component['type']);
           $conditional_results[] = $comparison_callback($source_values, $rule['value'], $source_component);
 
           // Record page number to later determine any intra-page dependency on this source.