diff --git a/SCSI/Inquiry.cs b/SCSI/Inquiry.cs
index 7b1d3950a..21516e42f 100644
--- a/SCSI/Inquiry.cs
+++ b/SCSI/Inquiry.cs
@@ -67,7 +67,7 @@ namespace DiscImageChef.Decoders.SCSI
                 return null;
             }
 
-            if(SCSIInquiryResponse.Length < SCSIInquiryResponse[4] + 5 &&
+            if(SCSIInquiryResponse.Length < SCSIInquiryResponse[4] + 4 &&
                SCSIInquiryResponse.Length != SCSIInquiryResponse[4])
             {
                 DicConsole.DebugWriteLine("SCSI INQUIRY decoder",