diff --git a/libbytesize.spec b/libbytesize.spec
index f247a54..12119a9 100644
--- a/libbytesize.spec
+++ b/libbytesize.spec
@@ -1,11 +1,13 @@
 Name:        libbytesize
 Version:     0.4
-Release:     1%{?dist}
+Release:     2%{?dist}
 Summary:     A library for working with sizes in bytes
 License:     LGPLv2+
 URL:         https://github.com/rhinstaller/libbytesize
 Source0:     https://github.com/rhinstaller/libbytesize/archive/%{name}-%{version}.tar.gz
 
+Patch0: not_delete_twice.patch
+
 %define realname bytesize
 
 BuildRequires: gmp-devel
@@ -51,6 +53,7 @@ the library from Python 3 easier and more convenient.
 
 %prep
 %setup -q -n %{name}-%{version}
+%patch0 -p1
 
 %build
 %configure
@@ -85,6 +88,9 @@ find %{buildroot} -type f -name "*.la" | xargs %{__rm}
 %{python3_sitearch}/bytesize/__pycache__/*
 
 %changelog
+* Fri Mar 11 2016 Vratislav Podzimek <vpodzime@redhat.com> - 0.4-2
+- Do not try to delete the C struct twice (vpodzime)
+
 * Wed Mar 09 2016 Vratislav Podzimek <vpodzime@redhat.com> - 0.4-1
 - Add the __init__.py file to provide a proper package (vpodzime)
 - Merge pull request #7 from vpodzime/master-decimal_locale (vpodzime)
diff --git a/not_delete_twice.patch b/not_delete_twice.patch
new file mode 100644
index 0000000..1f198a6
--- /dev/null
+++ b/not_delete_twice.patch
@@ -0,0 +1,27 @@
+From 482e4c3936a9ba84b3bfed797520ff3e8a525f9c Mon Sep 17 00:00:00 2001
+From: Vratislav Podzimek <vpodzime@redhat.com>
+Date: Fri, 11 Mar 2016 16:01:20 +0100
+Subject: [PATCH] Do not try to delete the C struct twice
+
+The default destructor takes care about calling the C struct's __del__
+implicitly.
+
+Signed-off-by: Vratislav Podzimek <vpodzime@redhat.com>
+---
+ src/python/bytesize.py | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/src/python/bytesize.py b/src/python/bytesize.py
+index 3a32b65..21b2a1e 100644
+--- a/src/python/bytesize.py
++++ b/src/python/bytesize.py
+@@ -557,6 +557,3 @@ class Size(object):
+ 
+     def __hash__(self):
+         return self.get_bytes()
+-
+-    def __del__(self):
+-        del(self._c_size)
+-- 
+2.5.0
+