diff --git a/scrapyd/runner.py b/scrapyd/runner.py
index 4e41b4a6..38db9c75 100644
--- a/scrapyd/runner.py
+++ b/scrapyd/runner.py
@@ -1,7 +1,5 @@
 import os
-import shutil
 import sys
-import tempfile
 from contextlib import contextmanager
 
 from scrapy.utils.misc import load_object
@@ -12,7 +10,6 @@
 
 @contextmanager
 def project_environment(project):
-    eggversion = os.environ.get('SCRAPYD_EGG_VERSION', None)
     config = Config()
     eggstorage_path = config.get(
         'eggstorage', 'scrapyd.eggstorage.FilesystemEggStorage'
@@ -20,21 +17,14 @@ def project_environment(project):
     eggstorage_cls = load_object(eggstorage_path)
     eggstorage = eggstorage_cls(config)
 
+    eggversion = os.environ.get('SCRAPYD_EGG_VERSION', None)
     version, eggfile = eggstorage.get(project, eggversion)
     if eggfile:
-        prefix = '%s-%s-' % (project, version)
-        f = tempfile.NamedTemporaryFile(suffix='.egg', prefix=prefix, delete=False)
-        shutil.copyfileobj(eggfile, f)
-        f.close()
-        activate_egg(f.name)
-    else:
-        f = None
-    try:
-        assert 'scrapy.conf' not in sys.modules, "Scrapy settings already loaded"
-        yield
-    finally:
-        if f:
-            os.remove(f.name)
+        activate_egg(eggfile.name)
+        eggfile.close()
+
+    assert 'scrapy.conf' not in sys.modules, "Scrapy settings already loaded"
+    yield
 
 
 def main():