diff --git a/extra/math/newtons-method/newtons-method.factor b/extra/math/newtons-method/newtons-method.factor
index bac41bab15..b2778a2d85 100644
--- a/extra/math/newtons-method/newtons-method.factor
+++ b/extra/math/newtons-method/newtons-method.factor
@@ -2,7 +2,7 @@
 ! Newton's Method of approximating roots
 
 USING: kernel math math.derivatives ;
-IN: newtons-method
+IN: math.newtons-method
 
 <PRIVATE
 : newton-step ( x function -- x2 ) dupd [ call ] [ derivative ] 2bi / - ;