diff --git a/python-zope.interface.changes b/python-zope.interface.changes
index 6a25785..4ae165e 100644
--- a/python-zope.interface.changes
+++ b/python-zope.interface.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Dec  6 11:45:14 UTC 2018 - Tomáš Chvátal <tchvatal@suse.com>
+
+- Fix fdupes call
+
 -------------------------------------------------------------------
 Tue Aug 28 11:29:16 UTC 2018 - tchvatal@suse.com
 
diff --git a/python-zope.interface.spec b/python-zope.interface.spec
index f2785a4..ed7106b 100644
--- a/python-zope.interface.spec
+++ b/python-zope.interface.spec
@@ -12,7 +12,7 @@
 # license that conforms to the Open Source Definition (Version 1.9)
 # published by the Open Source Initiative.
 
-# Please submit bugfixes or comments via http://bugs.opensuse.org/
+# Please submit bugfixes or comments via https://bugs.opensuse.org/
 #
 
 
@@ -60,7 +60,7 @@ the Design By Contract methodology support in Python.
 %install
 %python_install
 %python_expand rm %{buildroot}%{$python_sitearch}/zope/interface/_zope_interface_coptimizations.c
-%fdupes %{buildroot}%{_prefix}
+%python_expand %fdupes %{buildroot}%{$python_sitearch}
 
 %check
 %python_exec setup.py test