diff --git a/mutter-3.20.3-x86-longlong.patch b/mutter-3.20.3-x86-longlong.patch
new file mode 100644
index 0000000..599440c
--- /dev/null
+++ b/mutter-3.20.3-x86-longlong.patch
@@ -0,0 +1,11 @@
+--- mutter-3.20.3/src/core/startup-notification.c.orig	2016-07-08 23:09:06.728564374 +0200
++++ mutter-3.20.3/src/core/startup-notification.c	2016-07-08 23:09:56.925482612 +0200
+@@ -418,7 +418,7 @@
+   elapsed = ctod->now - timestamp;
+ 
+   meta_topic (META_DEBUG_STARTUP,
+-              "Sequence used %ld ms vs. %d max: %s\n",
++              "Sequence used %lld ms vs. %d max: %s\n",
+               elapsed, STARTUP_TIMEOUT,
+               meta_startup_notification_sequence_get_id (sequence));
+ 
diff --git a/mutter.spec b/mutter.spec
index ff45921..1531265 100644
--- a/mutter.spec
+++ b/mutter.spec
@@ -1,6 +1,6 @@
 %define majver %(echo %version | cut -d. -f1-2)
 Name:          mutter
-Version:       3.20.2
+Version:       3.20.3
 Release:       1mamba
 Summary:       A compositing window manager based on Metacity
 Group:         Graphical Desktop/Libraries/GNOME
@@ -13,6 +13,7 @@ Patch0:        mutter-3.14.1-gcc-4.9.patch
 Patch1:        mutter-3.14.2-build-fix-x86.patch
 Patch2:        mutter-3.16.1.1-gcc-4.9.2.patch
 Patch3:        mutter-3.18.2-missing_math_header.patch
+Patch4:        mutter-3.20.3-x86-longlong.patch
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
@@ -124,6 +125,7 @@ This package includes the %{name} API documentation.
 %patch1 -p1
 %patch2 -p1
 %patch3 -p1
+%patch4 -p1
 
 %build
 %configure \
@@ -203,6 +205,9 @@ fi
 #%{_datadir}/gtk-doc/html/meta/*
 
 %changelog
+* Wed Jun 29 2016 Automatic Build System <autodist@mambasoft.it> 3.20.3-1mamba
+- automatic version update by autodist
+
 * Mon May 16 2016 Automatic Build System <autodist@mambasoft.it> 3.20.2-1mamba
 - automatic version update by autodist