diff --git a/setup/installer/windows/freeze.py b/setup/installer/windows/freeze.py
index 0fe494e831..e67f75f9b0 100644
--- a/setup/installer/windows/freeze.py
+++ b/setup/installer/windows/freeze.py
@@ -72,7 +72,7 @@ class Win32Freeze(Command, WixMixIn):
         self.lib_dir = self.j(self.base, 'Lib')
         self.pylib = self.j(self.base, 'pylib.zip')
         self.dll_dir = self.j(self.base, 'DLLs')
-        self.plugins_dir = os.path.join(self.base, 'plugins')
+        self.plugins_dir = os.path.join(self.base, 'plugins2')
 
         self.initbase()
         self.build_launchers()
diff --git a/setup/installer/windows/site.py b/setup/installer/windows/site.py
index 33f2e63585..d2212037ee 100644
--- a/setup/installer/windows/site.py
+++ b/setup/installer/windows/site.py
@@ -92,7 +92,7 @@ def aliasmbcs():
 
 def add_calibre_vars():
     sys.resources_location = os.path.join(sys.app_dir, 'resources')
-    sys.extensions_location = os.path.join(sys.app_dir, 'plugins')
+    sys.extensions_location = os.path.join(sys.app_dir, 'plugins2')
 
     dv = os.environ.get('CALIBRE_DEVELOP_FROM', None)
     if dv and os.path.exists(dv):