diff --git a/src/mcedit2/rendering/blockmodels.pyx b/src/mcedit2/rendering/blockmodels.pyx
index 36337f2..1c276e5 100644
--- a/src/mcedit2/rendering/blockmodels.pyx
+++ b/src/mcedit2/rendering/blockmodels.pyx
@@ -340,6 +340,8 @@ cdef class BlockModels(object):
 
         textureVars = {}
         for k, v in rawTextureVars.iteritems():
+            if v is None:
+                continue
             while v.startswith("#"):
                 v = rawTextureVars.get(v[1:])
             if v: