diff --git a/modules/xerte/parent_templates/Nottingham/models_html5/gapFill.html b/modules/xerte/parent_templates/Nottingham/models_html5/gapFill.html
index 763be424c..db54be6d1 100644
--- a/modules/xerte/parent_templates/Nottingham/models_html5/gapFill.html
+++ b/modules/xerte/parent_templates/Nottingham/models_html5/gapFill.html
@@ -344,7 +344,7 @@
 					correctAnswer = answerData[interactionNumber][0];
 					correctAnswer = correctAnswer + "-->" + interactionNumber;
 					correctAnswers.push(correctAnswer);
-					correctOption = {source: answerData[interactionNumber][0], target: interactionNumber}
+					correctOption = {source: answerData[interactionNumber][0], target: interactionNumber + ''}
 					correctOptions.push(correctOption);
 				}
                 XTEnterInteraction(x_currentPage,  0 , 'match', name, correctOptions, correctAnswers, "", x_currentPageXML.getAttribute("grouping"));