diff --git a/basis/math/ratios/ratios-docs.factor b/basis/math/ratios/ratios-docs.factor
index 903017e371..7b6393dabe 100644
--- a/basis/math/ratios/ratios-docs.factor
+++ b/basis/math/ratios/ratios-docs.factor
@@ -1,5 +1,5 @@
 USING: help.markup help.syntax math math.private
-math.ratios.private ;
+math.ratios.private math.functions ;
 IN: math.ratios
 
 ARTICLE: "rationals" "Rational numbers"