diff --git a/clifford/cga.py b/clifford/cga.py
index 6212f841..c4e4c353 100644
--- a/clifford/cga.py
+++ b/clifford/cga.py
@@ -162,11 +162,9 @@ def __init__(self, cga, *args):
 
         # from vectors on flat
         else:
-            nulls = map(self.cga.null_vector, args)
-            if self.einf not in nulls:
-                nulls = list(nulls)+[self.einf]
-
+            nulls = list(map(self.cga.null_vector, args))
             self.mv = reduce(op, nulls)
+            self.mv = op(self.mv, self.einf) or self.mv
 
         self.mv = self.mv.normal()