diff --git a/python-cryptography.changes b/python-cryptography.changes
index 5f01606..0b0254b 100644
--- a/python-cryptography.changes
+++ b/python-cryptography.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Dec  6 11:48:31 UTC 2018 - Tomáš Chvátal <tchvatal@suse.com>
+
+- Fix fdupes call
+
 -------------------------------------------------------------------
 Tue Aug 21 07:43:31 UTC 2018 - tchvatal@suse.com
 
diff --git a/python-cryptography.spec b/python-cryptography.spec
index f76f2dc..e4aa955 100644
--- a/python-cryptography.spec
+++ b/python-cryptography.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/
 #
 
 
@@ -99,7 +99,7 @@ export CFLAGS="%{optflags} -fno-strict-aliasing"
 
 %install
 %python_install
-%fdupes %{buildroot}%{_prefix}
+%python_expand %fdupes %{buildroot}%{$python_sitearch}
 
 %check
 %{python_expand # this is going to be fun