diff --git a/DiscImageChef.DiscImages/VHD.cs b/DiscImageChef.DiscImages/VHD.cs
index 55036849..2b2ff756 100644
--- a/DiscImageChef.DiscImages/VHD.cs
+++ b/DiscImageChef.DiscImages/VHD.cs
@@ -1235,7 +1235,7 @@ namespace DiscImageChef.DiscImages
 
                 imageInfo.Cylinders = (uint)(imageInfo.Sectors / imageInfo.Heads / imageInfo.SectorsPerTrack);
 
-                if(imageInfo.Sectors == 0 && imageInfo.Heads == 0 && imageInfo.SectorsPerTrack == 0) break;
+                if(imageInfo.Cylinders == 0 && imageInfo.Heads == 0 && imageInfo.SectorsPerTrack == 0) break;
             }
 
             HardDiskFooter footer = new HardDiskFooter
diff --git a/DiscImageChef.DiscImages/VMware.cs b/DiscImageChef.DiscImages/VMware.cs
index f19c64a0..06a63560 100644
--- a/DiscImageChef.DiscImages/VMware.cs
+++ b/DiscImageChef.DiscImages/VMware.cs
@@ -1083,7 +1083,7 @@ namespace DiscImageChef.DiscImages
 
                 imageInfo.Cylinders = (uint)(imageInfo.Sectors / imageInfo.Heads / imageInfo.SectorsPerTrack);
 
-                if(imageInfo.Sectors == 0 && imageInfo.Heads == 0 && imageInfo.SectorsPerTrack == 0) break;
+                if(imageInfo.Cylinders == 0 && imageInfo.Heads == 0 && imageInfo.SectorsPerTrack == 0) break;
             }
 
             descriptorStream.WriteLine("# Disk DescriptorFile");