diff --git a/Readers/BamReader.cs b/Readers/BamReader.cs
index 1e3be34..5c6f5a0 100644
--- a/Readers/BamReader.cs
+++ b/Readers/BamReader.cs
@@ -106,9 +106,10 @@ private BamAlignment ReadSequence()
             var bamAlignment = new BamAlignment
             {
                 block_size = block_size,
+                refID = BitConverter.ToInt32(block, offset)
             };
 
-            bamAlignment.refID = BitConverter.ToInt32(block, offset); offset += 4;
+            offset += 4;
             bamAlignment.pos = BitConverter.ToInt32(block, offset) + 1; offset += 4;
             bamAlignment.l_read_name = block[offset]; offset += 1;
             bamAlignment.mapq = block[offset]; offset += 1;