diff --git a/rounding.scad b/rounding.scad
index 0a8fff6..d01706d 100644
--- a/rounding.scad
+++ b/rounding.scad
@@ -10,6 +10,7 @@
 //////////////////////////////////////////////////////////////////////
 
 include <BOSL2/beziers.scad>
+include <BOSL2/strings.scad>
 include <BOSL2/structs.scad>