diff --git a/sagemath-qepcad.patch b/sagemath-qepcad.patch
new file mode 100644
index 0000000..829fe9d
--- /dev/null
+++ b/sagemath-qepcad.patch
@@ -0,0 +1,53 @@
+diff -up src/sage/interfaces/qepcad.py.orig src/sage/interfaces/qepcad.py
+--- src/sage/interfaces/qepcad.py.orig	2015-07-19 15:07:33.423329719 -0300
++++ src/sage/interfaces/qepcad.py	2015-07-19 15:07:50.294330365 -0300
+@@ -522,8 +522,8 @@ TESTS:
+ 
+ Check the qepcad configuration file::
+ 
+-    sage: open('%s/default.qepcadrc'%SAGE_LOCAL).readlines()[-1]
+-    'SINGULAR .../local/bin\n'
++    sage: open('/usr/share/qepcad/default.qepcadrc').readlines()[-1]
++    'SINGULAR /usr/bin\n'
+ 
+ AUTHORS:
+ 
+@@ -550,6 +550,8 @@ from sage.repl.preparse import implicit_
+ 
+ from expect import Expect, ExpectFunction, AsciiArtString
+ 
++QEPCAD_LOCAL = "/usr/share/qepcad"
++
+ def _qepcad_cmd(memcells=None):
+     r"""
+     Construct a QEPCAD command line.
+@@ -560,17 +562,17 @@ def _qepcad_cmd(memcells=None):
+ 
+         sage: from sage.interfaces.qepcad import _qepcad_cmd
+         sage: s = _qepcad_cmd()
+-        sage: s == 'env qe=%s qepcad '%SAGE_LOCAL
++        sage: s == 'env qe=/usr/share/qepcad qepcad '
+         True
+         sage: s = _qepcad_cmd(memcells=8000000)
+-        sage: s == 'env qe=%s qepcad +N8000000'%SAGE_LOCAL
++        sage: s == 'env qe=/usr/share/qepcad qepcad +N8000000'
+         True
+     """
+     if memcells is not None:
+         memcells_arg = '+N%s' % memcells
+     else:
+         memcells_arg = ''
+-    return "env qe=%s qepcad %s"%(SAGE_LOCAL, memcells_arg)
++    return "env qe=%s qepcad %s"%(QEPCAD_LOCAL, memcells_arg)
+ 
+ _command_info_cache = None
+ 
+@@ -595,7 +597,7 @@ def _update_command_info():
+ 
+     cache = {}
+ 
+-    with open('%s/bin/qepcad.help'%SAGE_LOCAL) as help:
++    with open('%s/bin/qepcad.help'%QEPCAD_LOCAL) as help:
+         assert(help.readline().strip() == '@')
+ 
+         while True:
diff --git a/sagemath.spec b/sagemath.spec
index e6c8f60..5cf5bb2 100644
--- a/sagemath.spec
+++ b/sagemath.spec
@@ -42,7 +42,7 @@ Name:		sagemath
 Group:		Applications/Engineering
 Summary:	A free open-source mathematics software system
 Version:	6.5
-Release:	6%{?dist}
+Release:	7%{?dist}
 # The file ${SAGE_ROOT}/COPYING.txt is the upstream license breakdown file
 # Additionally, every $files section has a comment with the license name
 # before files with that license
@@ -154,6 +154,10 @@ Patch25:	%{name}-ipython3.patch
 # Fix a changed interface in NTL 9.x
 Patch26:	%{name}-ntl9.patch
 
+# Correct unable to start QEPCAD within sage
+# https://bugzilla.redhat.com/show_bug.cgi?id=1243590
+Patch27:	%{name}-qepcad.patch
+
 BuildRequires:	4ti2
 BuildRequires:	atlas-devel
 BuildRequires:	cddlib-tools
@@ -270,6 +274,7 @@ Requires:	python-twisted
 Requires:	python-twisted-mail
 Requires:	python-twisted-web
 Requires:	python-ZODB3
+Requires:	qepcad-B
 Requires:	R
 Requires:	rpy
 Requires:	%{name}-core
@@ -636,6 +641,7 @@ popd
 %patch24
 %patch25
 %patch26
+%patch27
 
 sed -e 's|@@SAGE_ROOT@@|%{SAGE_ROOT}|' \
     -e 's|@@SAGE_DOC@@|%{SAGE_DOC}|' \
@@ -1362,6 +1368,9 @@ exit 0
 
 ########################################################################
 %changelog
+* Sun Jul 19 2015 pcpa <paulo.cesar.pereira.de.andrade@gmail.com> - 6.5-7
+- Correct unable to start QEPCAD within sage (#1243590)
+
 * Fri Jun 19 2015 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 6.5-6
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild