diff --git a/qgis-1.5.0-sip411.patch b/qgis-1.5.0-sip411.patch
new file mode 100644
index 0000000..4422dfd
--- /dev/null
+++ b/qgis-1.5.0-sip411.patch
@@ -0,0 +1,64 @@
+--- qgis-1.5.0/python/core/conversions.sip	2010-04-20 14:25:42.000000000 +0200
++++ qgis-1.5.0-sip411/python/core/conversions.sip	2010-09-11 23:37:45.828329803 +0200
+@@ -263,61 +263,6 @@
+ };
+ 
+ 
+-
+-
+-%MappedType QSet<int>
+-{
+-%TypeHeaderCode
+-#include <QSet>
+-#if (SIP_VERSION >= 0x040900)
+-#define sipClass_QString ((sipWrapperType *) sipTypeAsPyTypeObject (sipType_QString))
+-#define sipClass_QVariant ((sipWrapperType *) sipTypeAsPyTypeObject (sipType_QVariant))
+-#endif
+-%End
+-
+-%ConvertFromTypeCode
+-  // Create the list.
+-  PyObject *l;
+-
+-  if ((l = PyList_New(sipCpp->size())) == NULL)
+-    return NULL;
+-      
+-  // Set the list elements.
+-  QSet<int>::iterator it = sipCpp->begin();
+-  for (int i = 0; it != sipCpp->end(); ++it, ++i)
+-  {
+-    PyObject *tobj;
+-
+-    if ((tobj = PyInt_FromLong(*it)) == NULL)
+-    {
+-      Py_DECREF(l);
+-      return NULL;
+-    }
+-    PyList_SET_ITEM(l, i, tobj);
+-  }
+-
+-  return l;
+-%End
+-
+-%ConvertToTypeCode
+-  // Check the type if that is all that is required.
+-  if (sipIsErr == NULL)
+-    return PyList_Check(sipPy);
+-
+-  QSet<int> *qset = new QSet<int>;
+-
+-  for (int i = 0; i < PyList_GET_SIZE(sipPy); ++i)
+-  {
+-    qset->insert(PyInt_AsLong(PyList_GET_ITEM(sipPy, i)));
+-  }
+-
+-  *sipCppPtr = qset;
+-  return sipGetState(sipTransferObj);
+-%End
+-
+-};
+-
+-
+ template <TYPE>
+ %MappedType QSet<TYPE>
+ {
diff --git a/qgis.spec b/qgis.spec
index 8f149ea..bd7d44f 100644
--- a/qgis.spec
+++ b/qgis.spec
@@ -4,7 +4,7 @@
 
 Name:           qgis
 Version:        1.5.0
-Release:        4%{?dist}
+Release:        5%{?dist}
 Summary:        A user friendly Open Source Geographic Information System
 
 Group:          Applications/Engineering
@@ -17,6 +17,7 @@ Source1:        %{name}.desktop
 # Proposed changes for next version: https://trac.osgeo.org/qgis/ticket/2863
 Patch0: qgis-1.5.0-grass.patch
 Patch1: qgis-1.5.0-qwt.patch
+Patch2: qgis-1.5.0-sip411.patch
 
 BuildRequires:  cmake
 BuildRequires:  flex bison
@@ -88,6 +89,7 @@ Python integration and plugins for QGIS.
 
 %patch0 -p1 -b .grass
 %patch1 -p1 -b .qwt
+%patch2 -p1 -b .sip411
 
 # Encode man-file to utf-8
 iconv -f iso8859-1 -t utf-8 qgis_help.1 > qgis_help.1.conv && mv qgis_help.1.conv qgis_help.1
@@ -222,12 +224,15 @@ rm -rf %{buildroot}
 %{python_sitearch}/%{name}
 
 %changelog
+* Mon Sep 13 2010 Volker Fröhlich <volker27@gmx.at> - 1.5.05
+- Added workaround patch for SIP 4.11, see http://trac.osgeo.org/qgis/ticket/2985
+
 * Thu Sep 09 2010 Rex Dieter <rdieter@fedoraproject.org> 1.5.0-4
 - rebuild (sip)
 - BR: qt4-devel
 
-* Fri Jul 30 2010 Volker Fröhlich <volker27@gmx.at> - 1.5.0-3
-- Added dependency for gdal-python to fulfill standard plugin's requirements
+* Fri Jul 30 2010 Volker Fröhlich <volker27@gmx.at> - 1.5.03
+- Added dependency for gdal-python to fulfill standard plugins' requirements
 
 * Tue Jul 27 2010 Rex Dieter <rdieter@fedoraproject.org> - 1.5.0-2.py27
 - one more time for python27, with feeling