diff --git a/trunk/material.config b/trunk/material.config
index ec732cce4..0c83019d3 100644
--- a/trunk/material.config
+++ b/trunk/material.config
@@ -19,14 +19,14 @@ Ngrains	4
 #####################
 
 [Aluminum_CubeSX]
-(constitutent)	material	1	texture	2	fraction	1.0
+(constitutent)	phase	1	texture	2	fraction	1.0
 
 [Copper_rCubeSX]
-(constitutent)	material	2	texture	3	fraction	1.0
+(constitutent)	phase	2	texture	3	fraction	1.0
 
 [DPsteel]
-(constitutent)	material	3	texture	1	fraction	0.8
-(constitutent)	material	4	texture	1	fraction	0.2
+(constitutent)	phase	3	texture	1	fraction	0.8
+(constitutent)	phase	4	texture	1	fraction	0.2
 
 
 #####################