diff --git a/Writer/SpectrumWriter.cs b/Writer/SpectrumWriter.cs
index 8cbdf33..8cad7d3 100644
--- a/Writer/SpectrumWriter.cs
+++ b/Writer/SpectrumWriter.cs
@@ -78,7 +78,7 @@ protected string ConstructSpectrumTitle(int scanNumber)
                 spectrumTitle.Append(ParseInput.RawFileName).Append(":");
             }
 
-            spectrumTiple.Append(" ");
+            spectrumTitle.Append(" ");
             spectrumTitle.Append("scan=");
             spectrumTitle.Append(scanNumber);