diff --git a/pptp-1.8.0-call-init-fix.patch b/pptp-1.8.0-call-init-fix.patch
new file mode 100644
index 0000000..9dbdb26
--- /dev/null
+++ b/pptp-1.8.0-call-init-fix.patch
@@ -0,0 +1,12 @@
+diff --git a/pptp_ctrl.c b/pptp_ctrl.c
+index 9864374..1948bce 100644
+--- a/pptp_ctrl.c
++++ b/pptp_ctrl.c
+@@ -351,6 +351,7 @@ PPTP_CALL * pptp_call_open(PPTP_CONN * conn, pptp_call_cb callback,
+     /* allocate structure. */
+     if ((call = malloc(sizeof(*call))) == NULL) return NULL;
+     /* Initialize call structure */
++    memset(call, 0, sizeof(*call));
+     call->call_type = PPTP_CALL_PNS;
+     call->state.pns = PNS_IDLE;
+     call->call_id   = (u_int16_t) i;
diff --git a/pptp.spec b/pptp.spec
index 3afcbdf..3e48b94 100644
--- a/pptp.spec
+++ b/pptp.spec
@@ -1,6 +1,6 @@
 Name:		pptp
 Version:	1.8.0
-Release:	4%{?dist}
+Release:	5%{?dist}
 Summary:	Point-to-Point Tunneling Protocol (PPTP) Client
 Group:		Applications/Internet
 License:	GPLv2+
@@ -8,6 +8,8 @@ URL:		http://pptpclient.sourceforge.net/
 Source0:	http://downloads.sf.net/pptpclient/pptp-%{version}.tar.gz
 Source1:	pptp-tmpfs.conf
 Patch0:		pptp-1.7.2-pptpsetup-mppe.patch
+# patch sent upstream
+Patch1:		pptp-1.8.0-call-init-fix.patch
 BuildRoot:	%{_tmppath}/%{name}-%{version}-%{release}-root-%(id -nu)
 BuildRequires:	/usr/bin/pod2man
 Requires:	ppp >= 2.4.2, /sbin/ip
@@ -36,6 +38,8 @@ tunnels.
 # Fedora releases and EL ≥ 5 include MPPE support out of the box (#502967)
 %patch0 -p1 -b .mppe
 
+%patch1 -p1 -b .call-init-fix
+
 # Pacify rpmlint
 perl -pi -e 's/install -o root -m 555 pptp/install -m 755 pptp/;' Makefile
 
@@ -76,6 +80,10 @@ rm -rf %{buildroot}
 %{_mandir}/man8/pptpsetup.8*
 
 %changelog
+* Tue Jan 20 2015 Jaroslav Škarvada <jskarvad@redhat.com> - 1.8.0-5
+- Fixed initialization of the call structure
+  Resolves: rhbz#1183627
+
 * Sun Aug 17 2014 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.8.0-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_22_Mass_Rebuild