diff --git a/9f45a77f4.patch b/9f45a77f4.patch
new file mode 100644
index 0000000..6283a6e
--- /dev/null
+++ b/9f45a77f4.patch
@@ -0,0 +1,41 @@
+commit 9f45a77f46829e666b35530939b9237cf978d4dc
+Author: Cyrill Gorcunov <gorcunov@gmail.com>
+Date:   Sat Feb 10 00:40:46 2018 +0300
+
+    nasmlib: Drop pure_func attrib from seg_alloc
+    
+    It not only reads static variable but writes it back as well.
+    
+    https://bugzilla.nasm.us/show_bug.cgi?id=3392461
+    
+    Reported-by: Michael Šimáček <msimacek@redhat.com>
+    Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
+
+commit 5eb1838b4d3752fd863d19442943983a2a5ee87c
+Author: Cyrill Gorcunov <gorcunov@gmail.com>
+Date:   Sat Feb 10 00:33:41 2018 +0300
+
+    nasmlib: Drop unused seg_init
+    
+    The helper has been eliminated in 2c4a4d5810d0a59b033a07876a2648ef5d4c2859
+    
+    https://bugzilla.nasm.us/show_bug.cgi?id=3392461
+    
+    Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
+Index: nasm-2.13.03/include/nasmlib.h
+===================================================================
+--- nasm-2.13.03.orig/include/nasmlib.h
++++ nasm-2.13.03/include/nasmlib.h
+@@ -188,11 +188,9 @@ int64_t readnum(char *str, bool *error);
+ int64_t readstrnum(char *str, int length, bool *warn);
+ 
+ /*
+- * seg_init: Initialise the segment-number allocator.
+  * seg_alloc: allocate a hitherto unused segment number.
+  */
+-void pure_func seg_init(void);
+-int32_t pure_func seg_alloc(void);
++int32_t seg_alloc(void);
+ 
+ /*
+  * many output formats will be able to make use of this: a standard
diff --git a/nasm-2.13.02.tar.xz b/nasm-2.13.02.tar.xz
deleted file mode 100644
index c944be4..0000000
--- a/nasm-2.13.02.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:8ac3235f49a6838ff7a8d7ef7c19a4430d0deecc0c2d3e3e237b5e9f53291757
-size 805744
diff --git a/nasm-2.13.03.tar.xz b/nasm-2.13.03.tar.xz
new file mode 100644
index 0000000..c81d160
--- /dev/null
+++ b/nasm-2.13.03.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:812ecfb0dcbc5bd409aaa8f61c7de94c5b8752a7b00c632883d15b2ed6452573
+size 806636
diff --git a/nasm.changes b/nasm.changes
index 7e46ed7..d151247 100644
--- a/nasm.changes
+++ b/nasm.changes
@@ -1,3 +1,19 @@
+-------------------------------------------------------------------
+Thu Mar 15 09:06:17 UTC 2018 - mpluskal@suse.com
+
+- Modernise spec file with spec-cleaner
+
+-------------------------------------------------------------------
+Thu Mar 15 06:49:13 UTC 2018 - adam.majer@suse.de
+
+- New upstream version 2.13.03:
+  * Add flags:
+    AES, VAES, VPCLMULQDQ
+  * Add VPCLMULQDQ instruction
+  * elf: Add missing dwarf loc section
+  * documentation updates
+- 9f45a77f4.patch: fixes compilation with gcc8 (bsc#1084631)
+
 -------------------------------------------------------------------
 Wed Jan 24 13:09:39 UTC 2018 - adam.majer@suse.de
 
diff --git a/nasm.spec b/nasm.spec
index 805e3c6..0ed76c3 100644
--- a/nasm.spec
+++ b/nasm.spec
@@ -17,13 +17,14 @@
 
 
 Name:           nasm
-Version:        2.13.02
+Version:        2.13.03
 Release:        0
 Summary:        Netwide Assembler (An x86 Assembler)
 License:        BSD-2-Clause
 Group:          Development/Languages/Other
-Url:            http://www.nasm.us/
+URL:            http://www.nasm.us/
 Source:         http://www.nasm.us/pub/nasm/releasebuilds/%{version}/nasm-%{version}.tar.xz
+Patch1:         9f45a77f4.patch
 BuildRequires:  fdupes
 
 %description
@@ -31,13 +32,14 @@ NASM is a prototype general-purpose x86 assembler. It can currently output
 several binary formats, including ELF, a.out, Win32, and OS/2.
 
 %prep
-%setup -q
+%autosetup -p1
 
 %build
 touch -r ./version.h ./version.h.stamp
 TS=$(LC_ALL=C date -u -r %{_sourcedir}/%{name}.changes '+%%b %%e %%Y')
 sed -i "s/__DATE__/\"$TS\"/g" version.h
 touch -r ./version.h.stamp ./version.h
+
 %configure
 make %{?_smp_mflags} all
 
@@ -46,11 +48,11 @@ make INSTALLROOT=%{buildroot} install rdf_install
 %fdupes %{buildroot}%{_mandir}
 
 %check
-make test
+make %{?_smp_mflags} test
 
 %files
-%defattr(-,root,root)
-%doc AUTHORS CHANGES ChangeLog LICENSE README
+%license LICENSE
+%doc AUTHORS CHANGES ChangeLog README
 %{_bindir}/ldrdf
 %{_bindir}/nasm
 %{_bindir}/ndisasm
@@ -62,16 +64,16 @@ make test
 %{_bindir}/rdfdump
 %{_bindir}/rdflib
 %{_bindir}/rdx
-%{_mandir}/man1/ldrdf.1%{ext_man}
-%{_mandir}/man1/nasm.1%{ext_man}
-%{_mandir}/man1/ndisasm.1%{ext_man}
-%{_mandir}/man1/rdf2bin.1%{ext_man}
-%{_mandir}/man1/rdf2com.1%{ext_man}
-%{_mandir}/man1/rdf2ihx.1%{ext_man}
-%{_mandir}/man1/rdf2ith.1%{ext_man}
-%{_mandir}/man1/rdf2srec.1%{ext_man}
-%{_mandir}/man1/rdfdump.1%{ext_man}
-%{_mandir}/man1/rdflib.1%{ext_man}
-%{_mandir}/man1/rdx.1%{ext_man}
+%{_mandir}/man1/ldrdf.1%{?ext_man}
+%{_mandir}/man1/nasm.1%{?ext_man}
+%{_mandir}/man1/ndisasm.1%{?ext_man}
+%{_mandir}/man1/rdf2bin.1%{?ext_man}
+%{_mandir}/man1/rdf2com.1%{?ext_man}
+%{_mandir}/man1/rdf2ihx.1%{?ext_man}
+%{_mandir}/man1/rdf2ith.1%{?ext_man}
+%{_mandir}/man1/rdf2srec.1%{?ext_man}
+%{_mandir}/man1/rdfdump.1%{?ext_man}
+%{_mandir}/man1/rdflib.1%{?ext_man}
+%{_mandir}/man1/rdx.1%{?ext_man}
 
 %changelog