diff --git a/jedi/settings.py b/jedi/settings.py
index 0daa3fad..ab359956 100644
--- a/jedi/settings.py
+++ b/jedi/settings.py
@@ -137,7 +137,7 @@ 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_new_parser.py b/test/test_new_parser.py
index 8d39d879..b5cac098 100644
--- a/test/test_new_parser.py
+++ b/test/test_new_parser.py
@@ -21,3 +21,4 @@ def test_basic_parsing():
     compare('\na #pass\n')
     compare('wblabla* 1\t\n')
     compare('def x(a, b:3): pass\n')
+    compare('assert foo\n')