diff --git a/SaneTsv/SaneTsv.cs b/SaneTsv/SaneTsv.cs
index d673656..25ef493 100644
--- a/SaneTsv/SaneTsv.cs
+++ b/SaneTsv/SaneTsv.cs
@@ -179,7 +179,7 @@ public class SaneTsv
           {
             if (format == FormatType.SIMPLE_TSV)
             {
-              throw new Exception($"Header {fields.Count} contain ':', which is not allowed for column names");
+              throw new Exception($"Header {j} contains ':', which is not allowed for column names");
             }
             columnTypeString = columnString.Split(":").Last();
             columnName = columnString.Substring(0, columnString.Length - columnTypeString.Length - 1);
@@ -939,7 +939,7 @@ public class SaneTsv
     var fields = new List<byte[]>();
     var records = new List<string[]>();
 
-    int line = 1;
+    int line = 2;
     int currentLineStart = 0;
 
     // Go back to the start of the current line