1 files changed, 5 insertions, 1 deletions

diff --git a/js/lib/rdge/materials/bump-metal-material.js b/js/lib/rdge/materials/bump-metal-material.js
index 67b16371..fa6f5300 100755
--- a/js/lib/rdge/materials/bump-metal-material.js
+++ b/js/lib/rdge/materials/bump-metal-material.js
@@ -158,10 +158,14 @@ var BumpMetalMaterial = function BumpMetalMaterial() {
                 var exportStr = "material: " + this.getShaderName() + "\n";
                 exportStr += "name: " + this.getName() + "\n";
 
+                var world = this.getWorld();
+                if (!world)
+                        throw new Error( "no world in material.export, " + this.getName() );
+
                 exportStr += "lightDiff: "                      + this.getLightDiff()           + "\n";
                 exportStr += "diffuseTexture: "         + this.getDiffuseTexture()      + "\n";
                 exportStr += "specularTexture: "        + this.getSpecularTexture()     + "\n";
-                exportStr += "normalMap: "              + this.getNormalTexture()       + "\n";
+                exportStr += "normalMap: "                      + this.getNormalTexture()       + "\n";
 
                 // every material needs to terminate like this
                 exportStr += "endMaterial\n";