diff --git a/jedi/api/helpers.py b/jedi/api/helpers.py
index 8102cc7f..14c8bac7 100644
--- a/jedi/api/helpers.py
+++ b/jedi/api/helpers.py
@@ -101,6 +101,10 @@ def _get_code_for_stack(code_lines, module, position):
     if leaf.type in ('indent', 'dedent'):
         return u('')
     elif leaf.type == 'error_leaf' or leaf.type == 'string':
+        if leaf.start_pos[0] < position[0]:
+            # On a different line, we just begin anew.
+            return u('')
+
         # Error leafs cannot be parsed, completion in strings is also
         # impossible.
         raise OnErrorLeaf(leaf)
@@ -266,9 +270,14 @@ def _get_call_signature_details_from_error_node(node, position):
 
 def get_call_signature_details(module, position):
     leaf = module.get_leaf_for_position(position, include_prefixes=True)
+    if leaf.start_pos >= position:
+        # Whitespace / comments after the leaf count towards the previous leaf.
+        leaf = leaf.get_previous_leaf()
+
     if leaf == ')':
         if leaf.end_pos == position:
             leaf = leaf.get_next_leaf()
+
     # Now that we know where we are in the syntax tree, we start to look at
     # parents for possible function definitions.
     node = leaf.parent
diff --git a/jedi/evaluate/compiled/fake.py b/jedi/evaluate/compiled/fake.py
index 0338b962..80da3a91 100644
--- a/jedi/evaluate/compiled/fake.py
+++ b/jedi/evaluate/compiled/fake.py
@@ -181,9 +181,9 @@ def _get_faked(module, obj, name=None):
         doc = '"""%s"""' % obj.__doc__  # TODO need escapes.
         suite = result.children[-1]
         string = pt.String(pt.zero_position_modifier, doc, (0, 0), '')
-        new_line = pt.Newline('\n', (0, 0), '')
+        new_line = pt.Newline(pt.zero_position_modifier, '\n', (0, 0))
         docstr_node = pt.Node('simple_stmt', [string, new_line])
-        suite.children.insert(2, docstr_node)
+        suite.children.insert(1, docstr_node)
         return result
 
 
diff --git a/jedi/evaluate/docstrings.py b/jedi/evaluate/docstrings.py
index d2ab34ed..929122c3 100644
--- a/jedi/evaluate/docstrings.py
+++ b/jedi/evaluate/docstrings.py
@@ -136,7 +136,7 @@ def _evaluate_for_statement_string(evaluator, string, module):
         pseudo_cls = p.module.subscopes[0]
         # First pick suite, then simple_stmt (-2 for DEDENT) and then the node,
         # which is also not the last item, because there's a newline.
-        stmt = pseudo_cls.children[-1].children[-2].children[-2]
+        stmt = pseudo_cls.children[-1].children[-1].children[-2]
     except (AttributeError, IndexError):
         return []
 
diff --git a/jedi/parser/__init__.py b/jedi/parser/__init__.py
index 22f38605..8ca39adc 100644
--- a/jedi/parser/__init__.py
+++ b/jedi/parser/__init__.py
@@ -169,6 +169,12 @@ class Parser(object):
         try:
             new_node = Parser.AST_MAPPING[symbol](children)
         except KeyError:
+            if symbol == 'suite':
+                # We don't want the INDENT/DEDENT in our parser tree. Those
+                # leaves are just cancer. They are virtual leaves and not real
+                # ones and therefore have pseudo start/end positions and no
+                # prefixes. Just ignore them.
+                children = [children[0]] + children[2:-1]
             new_node = pt.Node(symbol, children)
 
         # We need to check raw_node always, because the same node can be
diff --git a/jedi/parser/tree.py b/jedi/parser/tree.py
index c5a2d554..a35fe437 100644
--- a/jedi/parser/tree.py
+++ b/jedi/parser/tree.py
@@ -74,7 +74,7 @@ class DocstringMixin(object):
         elif isinstance(self, ClassOrFunc):
             node = self.children[self.children.index(':') + 1]
             if is_node(node, 'suite'):  # Normally a suite
-                node = node.children[2]  # -> NEWLINE INDENT stmt
+                node = node.children[1]  # -> NEWLINE stmt
         else:  # ExprStmt
             simple_stmt = self.parent
             c = simple_stmt.parent.children
diff --git a/jedi/settings.py b/jedi/settings.py
index 13dcfd45..b5e15759 100644
--- a/jedi/settings.py
+++ b/jedi/settings.py
@@ -130,7 +130,7 @@ On Linux, if environment variable ``$XDG_CACHE_HOME`` is set,
 # parser
 # ----------------
 
-fast_parser = True
+fast_parser = False
 """
 Use the fast parser. This means that reparsing is only being done if
 something has been changed e.g. to a function. If this happens, only the
diff --git a/test/test_parser/test_parser.py b/test/test_parser/test_parser.py
index 0ec75d0a..14ec763a 100644
--- a/test/test_parser/test_parser.py
+++ b/test/test_parser/test_parser.py
@@ -177,9 +177,7 @@ def test_end_pos_error_correction():
     m = ParserWithRecovery(load_grammar(), s).module
     func = m.children[0]
     assert func.type == 'funcdef'
-    # This is not exactly correct, but ok, because it doesn't make a difference
-    # at all. We just want to make sure that the module end_pos is correct!
-    assert func.end_pos == (3, 0)
+    assert func.end_pos == (2, 2)
     assert m.end_pos == (2, 2)