diff --git a/client/modules/IDE/components/PreviewFrame.jsx b/client/modules/IDE/components/PreviewFrame.jsx
index c29d2e54..314090c7 100644
--- a/client/modules/IDE/components/PreviewFrame.jsx
+++ b/client/modules/IDE/components/PreviewFrame.jsx
@@ -34,8 +34,8 @@ function getAllScriptOffsets(htmlFile) {
     } else {
       endFilenameInd = htmlFile.indexOf('.js', ind + startTag.length + 3);
       filename = htmlFile.substring(ind + startTag.length, endFilenameInd);
-      // the length of hijackConsoleErrorsScript is 35 lines, already needed a -1 offset.
-      lineOffset = htmlFile.substring(0, ind).split('\n').length + 34;
+      // the length of hijackConsoleErrorsScript is 31 lines
+      lineOffset = htmlFile.substring(0, ind).split('\n').length + 31;
       offs.push([lineOffset, filename]);
       lastInd = ind + 1;
     }