diff --git a/src/Humanizer/Localisation/NumberToWords/FinnishNumberToWordsConverter.cs b/src/Humanizer/Localisation/NumberToWords/FinnishNumberToWordsConverter.cs
index 396bef2cc..a20f5e7c4 100644
--- a/src/Humanizer/Localisation/NumberToWords/FinnishNumberToWordsConverter.cs
+++ b/src/Humanizer/Localisation/NumberToWords/FinnishNumberToWordsConverter.cs
@@ -87,9 +87,9 @@ public override string Convert(long input)
 
         private string GetOrdinalUnit(int number, bool useExceptions)
         {
-            if (useExceptions && OrdinalExceptions.ContainsKey(number))
+            if (useExceptions && OrdinalExceptions.TryGetValue(number, out var unit))
             {
-                return OrdinalExceptions[number];
+                return unit;
             }
 
             return OrdinalUnitsMap[number];