diff --git a/src/PyramidScheme.jl b/src/PyramidScheme.jl
index 40cfb57..a775531 100644
--- a/src/PyramidScheme.jl
+++ b/src/PyramidScheme.jl
@@ -417,8 +417,8 @@ end
 
 
 
-xkey(keyext) = DD.dim2key(DD.dims(keyext, XDim))
-ykey(keyext) = DD.dim2key(DD.dims(keyext, YDim))
+xkey(keyext) = DD.name(DD.dims(keyext, XDim))
+ykey(keyext) = DD.name(DD.dims(keyext, YDim))
 #TODO write test, move to utils.jl
 
 """