diff --git a/src/sgfParser/collection.py b/src/sgfParser/collection.py
--- a/src/sgfParser/collection.py
+++ b/src/sgfParser/collection.py
@@ -41,7 +41,7 @@ class GameTree:
 			x.setParent(y)
 			y=x
 			i=skipWhitespace(s,i)
-			i,x= Node.create(s, i)
+			i,x=Node.create(s, i)
 		i=skipWhitespace(s,i)
 		i,x=GameTree.create(s,i)
 		while x is not None:
@@ -69,7 +69,7 @@ class GameTree:
 
 	## Create and return a new game tree containing the provided Node.
 	#
-	# Ancestor nodes are copied, descendants are taken directly.
+	# Ancestor nodes are copied, descendants are shared.
 	def _buildSubtree(self,seedNode):
 		node=seedNode.copy()