diff --git a/test/test_evaluate/extensions/README.rst b/test/test_evaluate/extensions/README.rst
deleted file mode 100644
index 5f0b69ff..00000000
--- a/test/test_evaluate/extensions/README.rst
+++ /dev/null
@@ -1,10 +0,0 @@
-This directory contains pre-compiled extensions modules used to test completions
-for compiled modules on Travis-CI (Ubuntu 12.04 64bit).
-
-To build the extensions modules, run::
-
-    python setup.py build_ext -i
-
-
-Then move the compiled modules to their testing package ( ./**compiledXX**, where XX is the
-python version used to run setup.py).
\ No newline at end of file
diff --git a/test/test_evaluate/extensions/compiled.pyx b/test/test_evaluate/extensions/compiled.pyx
deleted file mode 100644
index 1e7c6907..00000000
--- a/test/test_evaluate/extensions/compiled.pyx
+++ /dev/null
@@ -1,6 +0,0 @@
-cdef class Foo:
-    pass
-
-
-cdef class Bar:
-    pass
diff --git a/test/test_evaluate/extensions/compiled27/__init__.py b/test/test_evaluate/extensions/compiled27/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/test/test_evaluate/extensions/compiled27/compiled.so b/test/test_evaluate/extensions/compiled27/compiled.so
deleted file mode 100755
index becbfb56..00000000
Binary files a/test/test_evaluate/extensions/compiled27/compiled.so and /dev/null differ
diff --git a/test/test_evaluate/extensions/compiled32/__init__.py b/test/test_evaluate/extensions/compiled32/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/test/test_evaluate/extensions/compiled32/compiled.so b/test/test_evaluate/extensions/compiled32/compiled.so
deleted file mode 100755
index df34cfa0..00000000
Binary files a/test/test_evaluate/extensions/compiled32/compiled.so and /dev/null differ
diff --git a/test/test_evaluate/extensions/setup.py b/test/test_evaluate/extensions/setup.py
deleted file mode 100644
index a13237d2..00000000
--- a/test/test_evaluate/extensions/setup.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from distutils.core import setup
-from Cython.Build import cythonize
-
-setup(
-    ext_modules=cythonize("compiled.pyx")
-)
diff --git a/test/test_evaluate/test_extension.py b/test/test_evaluate/test_extension.py
index 2f198ea7..cf15b55c 100644
--- a/test/test_evaluate/test_extension.py
+++ b/test/test_evaluate/test_extension.py
@@ -2,41 +2,30 @@
 Test compiled module
 """
 import os
-import platform
-import sys
+
 import jedi
 
-from ..helpers import cwd_at
 
-
-@cwd_at('test/test_evaluate/extensions')
 def test_completions():
-    if platform.architecture()[0] == '64bit':
-        package_name = "compiled%s%s" % sys.version_info[:2]
-        sys.path.insert(0, os.getcwd())
-        if os.path.exists(package_name):
-            s = jedi.Script("from %s import compiled; compiled." % package_name)
-            assert len(s.completions()) >= 2
+    s = jedi.Script('import _ctypes; _ctypes.')
+    assert len(s.completions()) >= 15
 
 
-@cwd_at('test/test_evaluate/extensions')
 def test_call_signatures_extension():
-    # with a cython extension
-    if platform.architecture()[0] == '64bit':
-        package_name = "compiled%s%s" % sys.version_info[:2]
-        sys.path.insert(0, os.getcwd())
-        if os.path.exists(package_name):
-            s = jedi.Script("from %s import compiled; compiled.Foo(" %
-                            package_name)
-            defs = s.call_signatures()
-            for call_def in defs:
-                for param in call_def.params:
-                    pass
+    if os.name == 'nt':
+        func = 'LoadLibrary'
+        params = 1
+    else:
+        func = 'dlopen'
+        params = 2
+    s = jedi.Script('import _ctypes; _ctypes.%s(' % (func,))
+    sigs = s.call_signatures()
+    assert len(sigs) == 1
+    assert len(sigs[0].params) == params
 
 
 def test_call_signatures_stdlib():
-    code = "import math; math.cos("
-    s = jedi.Script(code)
-    defs = s.call_signatures()
-    for call_def in defs:
-        assert len(call_def.params) == 1
+    s = jedi.Script('import math; math.cos(')
+    sigs = s.call_signatures()
+    assert len(sigs) == 1
+    assert len(sigs[0].params) == 1