diff --git a/pipimport/__init__.py b/pipimport/__init__.py
index 1b6c2e6..b55be60 100644
--- a/pipimport/__init__.py
+++ b/pipimport/__init__.py
@@ -27,7 +27,6 @@
 except ImportError:
     import builtins as __builtin__
 
-_pip_bin = os.path.join(sys.prefix, 'bin', 'pip')
 _ignore_list_f = [os.path.join(s, ".pipimport-ignore")
                   for s in [sys.prefix, '.']]
 
@@ -48,7 +47,7 @@ class PipInstallError(Exception):
 
 def _pip_install(name):
     try:
-        subprocess.check_call([_pip_bin, "install", name])
+        subprocess.check_call([sys.executable, "-m", "pip", "install", name])
     except subprocess.CalledProcessError:
         raise PipInstallError()
 
@@ -106,5 +105,5 @@ def install():
 @atexit.register
 def uninstall():
     if isinstance(__builtin__.__import__, ImportPipInstaller):
-        __import__.saveignore()
-        __builtin__.__import__ = __import__.realimport
+        __builtin__.__import__.saveignore()
+        __builtin__.__import__ = __builtin__.__import__.realimport