diff --git a/src/__comm__/__frags.scad b/src/__comm__/__frags.scad
index 8bab1343..ccd752f4 100644
--- a/src/__comm__/__frags.scad
+++ b/src/__comm__/__frags.scad
@@ -1,3 +1,3 @@
 function __frags(radius) = 
-    $fn == 0 ?  max(min(360 / $fa, radius * PI * 2 / $fs), 5) :
+    $fn == 0 ?  max(min(360 / $fa, radius * 6.283185307179586 / $fs), 5) :
     $fn >= 3 ? $fn : 3;
\ No newline at end of file