diff --git a/include/command-line-options.php b/include/command-line-options.php
index 44665d47..6b7cca31 100644
--- a/include/command-line-options.php
+++ b/include/command-line-options.php
@@ -5383,10 +5383,10 @@ function.</p>
 o3x3        3x3   Ordered 3x3 (dispersed)
 o4x4        4x4   Ordered 4x4 (dispersed)
 o8x8        8x8   Ordered 8x8 (dispersed)
-h3x4a       4x1   Halftone 4x4 (angled)
+h4x4a       4x1   Halftone 4x4 (angled)
 h6x6a       6x1   Halftone 6x6 (angled)
 h8x8a       8x1   Halftone 8x8 (angled)
-h3x4o             Halftone 4x4 (orthogonal)
+h4x4o             Halftone 4x4 (orthogonal)
 h6x6o             Halftone 6x6 (orthogonal)
 h8x8o             Halftone 8x8 (orthogonal)
 h16x16o           Halftone 16x16 (orthogonal)