diff --git a/JL.Core/Mining/MiningUtils.cs b/JL.Core/Mining/MiningUtils.cs
index 2b9e6255..18d87d23 100644
--- a/JL.Core/Mining/MiningUtils.cs
+++ b/JL.Core/Mining/MiningUtils.cs
@@ -667,7 +667,7 @@ private static Dictionary<JLField, string> GetMiningParameters(LookupResult[] lo
             }
         }
 
-        if (userFields is null || userFields.ContainsKey(JLField.DefinitionsFromMultipleDictionaries.GetDescription()!))
+        if (userFields is null || userFields.ContainsValue(JLField.DefinitionsFromMultipleDictionaries))
         {
             string? definitionsFromAllDictionaries = GetDefinitionsFromAllDictionaries(lookupResults, currentLookupResultIndex, selectedSpelling, formattedDefinitions, useHtmlTags);
             if (definitionsFromAllDictionaries is not null)