diff --git a/jedi/evaluate/imports.py b/jedi/evaluate/imports.py
index bc9c0e4a..7c10e5bc 100644
--- a/jedi/evaluate/imports.py
+++ b/jedi/evaluate/imports.py
@@ -335,7 +335,7 @@ class _Importer(object):
             content = common.source_to_unicode(f.read())
             # these are strings that need to be used for namespace packages,
             # the first one is ``pkgutil``, the second ``pkg_resources``.
-            options = 'declare_namespace(__name__)', 'extend_path(__path__'
+            options = ('declare_namespace(__name__)', 'extend_path(__path__')
             if options[0] in content or options[1] in content:
                 # It is a namespace, now try to find the rest of the modules.
                 return follow_path(iter(import_path), sys.path)
diff --git a/jedi/parser/representation.py b/jedi/parser/representation.py
index fc812288..3227d108 100644
--- a/jedi/parser/representation.py
+++ b/jedi/parser/representation.py
@@ -1143,6 +1143,7 @@ isinstance(c, (tokenize.Token, Operator)) else unicode(c)
             else:
                 # comments, strange tokens (like */**), error tokens to
                 # reproduce the string correctly.
+                is_chain = False
                 result.append(tok)
         return result
 
diff --git a/test/completion/invalid.py b/test/completion/invalid.py
index 832935b2..18233c20 100644
--- a/test/completion/invalid.py
+++ b/test/completion/invalid.py
@@ -157,3 +157,18 @@ def empty_assert():
     x
 
 import datetime as 
+
+
+# -----------------
+# statements
+# -----------------
+
+call = ''
+invalid = .call
+#? str()
+invalid
+
+call = ''
+invalid = call?.call
+#? str()
+invalid