diff --git a/lib/OpenLayers/Format/SLD/v1.js b/lib/OpenLayers/Format/SLD/v1.js
index f96b1c2b1d..b16733dc0a 100644
--- a/lib/OpenLayers/Format/SLD/v1.js
+++ b/lib/OpenLayers/Format/SLD/v1.js
@@ -222,7 +222,7 @@ OpenLayers.Format.SLD.v1 = OpenLayers.Class(OpenLayers.Format.XML, {
                     symbolizer.graphicOpacity = graphic.opacity;
                 }
                 if(graphic.size != undefined) {
-                    symbolizer.pointRadius = graphic.size;
+                    symbolizer.pointRadius = graphic.size / 2;
                 }
                 if(graphic.href != undefined) {
                     symbolizer.externalGraphic = graphic.href;
@@ -772,7 +772,7 @@ OpenLayers.Format.SLD.v1 = OpenLayers.Class(OpenLayers.Format.XML, {
                     this.writeNode(node, "Opacity", symbolizer.graphicOpacity);
                 }
                 if(symbolizer.pointRadius != undefined) {
-                    this.writeNode(node, "Size", symbolizer.pointRadius);
+                    this.writeNode(node, "Size", symbolizer.pointRadius * 2);
                 }
                 if(symbolizer.rotation != undefined) {
                     this.writeNode(node, "Rotation", symbolizer.rotation);