Arguments without default are no longer treated as if defined as Undefined

2 files changed, 2 insertions, 2 deletions

diff --git a/scss/__init__.py b/scss/__init__.py
index f2c6c80..6732df2 100644
--- a/scss/__init__.py
+++ b/scss/__init__.py
@@ -781,7 +781,7 @@ class Scss(object):
             elif var_name in kwargs:
                 # Try keyword arguments
                 value = kwargs.pop(var_name)
-            elif node:
+            elif node is not None:
                 # OK, there's a default argument; try that
                 # DEVIATION: this allows argument defaults to refer to earlier
                 # argument values
diff --git a/scss/expression.py b/scss/expression.py
index 4c521c6..471e62e 100644
--- a/scss/expression.py
+++ b/scss/expression.py
@@ -443,7 +443,7 @@ class ArgspecLiteral(Expression):
             if var is None:
                 # value is actually the name
                 var = value
-                value = Literal(Undefined())
+                value = None
 
                 if started_kwargs:
                     raise SyntaxError(