diff --git a/data/models/materials.xml b/data/models/materials.xml
index c2ddc4c27..d8d2af8d0 100644
--- a/data/models/materials.xml
+++ b/data/models/materials.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0"?>
 <materials>
-  <material name="banana.png" alpha="0.5"/>
+  <material name="banana.png"/>
   <material name="gift-box.png"/>
   <material name="gift-loop.png"  sphere="Y"/>
   <material name="gold.png"  light="Y" sphere="Y"/>
-  <material name="nitro-tank.png" transparency="Y" alpha="0.5"/>
+  <material name="nitro-tank.png" transparency="Y"/>
   <material name="tank-blue.png"  sphere="Y"/>
   <material name="tank-green.png"  sphere="Y"/>
   <material name="tank-cyan.png"  sphere="Y"/>