diff --git a/pyeda/__init__.py b/pyeda/__init__.py
index <HASH>..<HASH> 100644
--- a/pyeda/__init__.py
+++ b/pyeda/__init__.py
@@ -4,8 +4,6 @@ Python EDA Package
 
 __version__ = "0.13.0"
 
-# Positional Cube Notation
-PC_VOID, PC_ONE, PC_ZERO, PC_DC = range(4)
 
 import pyeda.alphas
 import pyeda.arithmetic
diff --git a/pyeda/table.py b/pyeda/table.py
index <HASH>..<HASH> 100644
--- a/pyeda/table.py
+++ b/pyeda/table.py
@@ -16,10 +16,12 @@ Interface Classes:
 import array
 
 from pyeda import boolfunc
-from pyeda import PC_VOID, PC_ONE, PC_ZERO, PC_DC
 from pyeda.expr import exprvar, Or, And
 from pyeda.util import cached_property
 
+# Positional Cube Notation
+PC_VOID, PC_ONE, PC_ZERO, PC_DC = range(4)
+
 # existing TTVariable references
 TTVARIABLES = dict()
Move positional cube stuff into pyeda.table