diff --git a/module/doc/view/content.html.php b/module/doc/view/content.html.php
index b2c0fa95ba..376811d81e 100644
--- a/module/doc/view/content.html.php
+++ b/module/doc/view/content.html.php
@@ -295,7 +295,7 @@
 $(function()
 {
     var simplemde = new SimpleMDE({element: $("#markdownContent")[0],toolbar:false, status: false});
-    simplemde.value(markdownText);
+    simplemde.value(String(markdownText));
     simplemde.togglePreview();
 
     $('#content .CodeMirror .editor-preview a').attr('target', '_blank');
diff --git a/module/doc/view/view.html.php b/module/doc/view/view.html.php
index 14d3f0e80a..6d511bd910 100644
--- a/module/doc/view/view.html.php
+++ b/module/doc/view/view.html.php
@@ -249,7 +249,7 @@ js::set('docID', $doc->id);
 $(function()
 {
     var simplemde = new SimpleMDE({element: $("#markdownContent")[0],toolbar:false, status: false});
-    simplemde.value(markdownText);
+    simplemde.value(String(markdownText));
     simplemde.togglePreview();
 
     $('#content .CodeMirror .editor-preview a').attr('target', '_blank');