fix empty description

diff --git a/basis/math/bitwise/bitwise-docs.factor b/basis/math/bitwise/bitwise-docs.factor
index 18ae8e1497f4aef45b150bc2479adb104c871a24..358c984276665182a774815dfec360c41151af06 100644 (file)
--- a/basis/math/bitwise/bitwise-docs.factor
+++ b/basis/math/bitwise/bitwise-docs.factor
@@ -242,7 +242,7 @@ HELP: shift-mod
      { "n" integer } { "s" integer } { "w" integer }
      { "n" integer }
 }
-{ $description "" } ;
+{ $description "Calls " { $link shift } " on " { $snippet "n" } " and " { $snippet "s" } ", wrapping the result to " { $snippet "w" } " bits." } ;
 
 HELP: unmask
 { $values