diff --git a/library/pPie.php b/library/pPie.php
index 209b749..bbe7e66 100644
--- a/library/pPie.php
+++ b/library/pPie.php
@@ -885,9 +885,9 @@ function writeShiftedLabels()
    /* Draw a ring chart */
    function draw2DRing($X,$Y,$Format="")
     {
-     $OuterRadius	= isset($Format["Radius"]) ? $Format["Radius"] : 60;
+     $OuterRadius	= isset($Format["ORadius"]) ? $Format["ORadius"] : 60;
      $Precision		= isset($Format["Precision"]) ? $Format["Precision"] : 0;
-     $InnerRadius	= isset($Format["Radius"]) ? $Format["Radius"] : 30;
+     $InnerRadius	= isset($Format["IRadius"]) ? $Format["IRadius"] : 30;
      $Border		= isset($Format["Border"]) ? $Format["Border"] : FALSE;
      $BorderR		= isset($Format["BorderR"]) ? $Format["BorderR"] : 255;
      $BorderG		= isset($Format["BorderG"]) ? $Format["BorderG"] : 255;
@@ -1497,4 +1497,4 @@ function clean0Values($Data,$Palette,$DataSerie,$AbscissaSerie)
     return(array($Data,$NewPalette));
    }
   }
-?>
\ No newline at end of file
+?>