diff --git a/smnp/ast/node/atom.py b/smnp/ast/node/atom.py
index 4b53b6d..95eda19 100644
--- a/smnp/ast/node/atom.py
+++ b/smnp/ast/node/atom.py
@@ -78,8 +78,18 @@ def AtomParser(input):
     from smnp.ast.node.identifier import IdentifierParser
     from smnp.ast.node.list import ListParser
     from smnp.ast.node.map import MapParser
+    from smnp.ast.node.expression import ExpressionParser
+
+    parentheses = Parser.allOf(
+        Parser.terminal(TokenType.OPEN_PAREN),
+        Parser.doAssert(ExpressionParser, "expression"),
+        Parser.terminal(TokenType.CLOSE_PAREN),
+        createNode=lambda open, expr, close: expr,
+        name="grouping parentheses"
+    )
 
     return Parser.oneOf(
+        parentheses,
         LiteralParser,
         IdentifierParser,
         ListParser,
diff --git a/smnp/ast/node/factor.py b/smnp/ast/node/factor.py
index 404a4f3..7d9ac98 100644
--- a/smnp/ast/node/factor.py
+++ b/smnp/ast/node/factor.py
@@ -11,26 +11,11 @@ class Power(BinaryOperator):
     pass
 
 def FactorParser(input):
-    from smnp.ast.node.expression import ExpressionParser
-
-    parentheses = Parser.allOf(
-        Parser.terminal(TokenType.OPEN_PAREN),
-        Parser.doAssert(ExpressionParser, "expression"),
-        Parser.terminal(TokenType.CLOSE_PAREN),
-        createNode=lambda open, expr, close: expr,
-        name="grouping parentheses"
-    )
-
-    factorOperands = Parser.oneOf(
-        parentheses,
-        UnitParser,
-        name="factor operands"
-    )
 
     powerFactor = Parser.leftAssociativeOperatorParser(
-        factorOperands,
+        UnitParser,
         [TokenType.DOUBLE_ASTERISK],
-        factorOperands,
+        UnitParser,
         lambda left, op, right: Power.withValues(left, op, right),
         name="power operator"
     )