diff --git a/content/multipledataset.html b/content/multipledataset.html
index 34f0843e..04c05016 100644
--- a/content/multipledataset.html
+++ b/content/multipledataset.html
@@ -514,6 +514,7 @@ draft: false
             if (ex[3].Value == VertExcitationKinds.Fluorescence.Value) {
               Vertkindtext = String.raw`[\mathrm{F}]`
             }
+            desctex=""
             if (ex[2].description.string) {
               desctex = "(" + ex[2].description.string + ")"
             }