diff --git a/src/ElectionResults.Core/Elections/ResultsProcessor.cs b/src/ElectionResults.Core/Elections/ResultsProcessor.cs
index 76a8b21..544b008 100644
--- a/src/ElectionResults.Core/Elections/ResultsProcessor.cs
+++ b/src/ElectionResults.Core/Elections/ResultsProcessor.cs
@@ -32,7 +32,7 @@ public static ElectionResultsResponse PopulateElectionResults(Turnout electionTu
             {
                 if (results.ValidVotes == 0)
                 {
-                    results.ValidVotes = results.TotalVotes - results.ValidVotes;
+                    results.ValidVotes = results.TotalVotes - results.NullVotes;
                 }
 
                 results.Candidates = new List<CandidateResponse>