diff --git a/library/math/constants.factor b/library/math/constants.factor
index 0333308971..7ed04d23d7 100644
--- a/library/math/constants.factor
+++ b/library/math/constants.factor
@@ -8,7 +8,7 @@ USING: namespaces math ;
 : bootstrap-cells bootstrap-cell * ; inline
 
 : cell-bits 8 cells ; inline
-: bootstrap-cell-bits 8 cells ; inline
+: bootstrap-cell-bits 8 bootstrap-cells ; inline
 
 IN: math