diff --git a/libmpcdec-extern.patch b/libmpcdec-extern.patch
new file mode 100644
index 0000000..64f7759
--- /dev/null
+++ b/libmpcdec-extern.patch
@@ -0,0 +1,17 @@
+Index: libmpcdec/requant.h
+===================================================================
+--- libmpcdec/requant.h	(revision 478)
++++ libmpcdec/requant.h	(revision 479)
+@@ -47,9 +47,9 @@
+ 
+ 
+ /* C O N S T A N T S */
+-const mpc_uint8_t      Res_bit [18];     ///< Bits per sample for chosen quantizer
+-const MPC_SAMPLE_FORMAT __Cc    [1 + 18]; ///< Requantization coefficients
+-const mpc_int16_t       __Dc    [1 + 18]; ///< Requantization offset
++extern const mpc_uint8_t      Res_bit [18];     ///< Bits per sample for chosen quantizer
++extern const MPC_SAMPLE_FORMAT __Cc    [1 + 18]; ///< Requantization coefficients
++extern const mpc_int16_t       __Dc    [1 + 18]; ///< Requantization offset
+ 
+ #define Cc (__Cc + 1)
+ #define Dc (__Dc + 1)
diff --git a/musepack.changes b/musepack.changes
index bb140d4..58c962c 100644
--- a/musepack.changes
+++ b/musepack.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Jan  8 15:52:02 UTC 2020 - Michael Gorse <mgorse@suse.com>
+
+- Add libmpcdec-extern.patch: add missing extern declarations
+  (boo#1160284). 
+
 -------------------------------------------------------------------
 Mon Aug 26 08:21:49 UTC 2019 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/musepack.spec b/musepack.spec
index 04e5436..b90f65f 100644
--- a/musepack.spec
+++ b/musepack.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package musepack
 #
-# Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2020 SUSE LINUX GmbH, Nuernberg, Germany.
 # Copyright (c) 2013 Asterios Dramis <asterios.dramis@gmail.com>.
 #
 # All modifications and additions to the file contributed by third parties
@@ -30,6 +30,8 @@ Source0:        https://files.musepack.net/source/%{name}_src_%{version}.tar.gz
 Source99:       baselibs.conf
 # PATCH-FIX-UPSTREAM libmpcdec.patch asterios.dramis@gmail.com -- Fix CMakeLists.txt to install a libmpcdec shared library, fix missing libmpcdec link to libm
 Patch0:         libmpcdec.patch
+# PATCh-FIX-UPSTREAM libmpcdec-extern.patch boo#1160284 mgorse@suse.com -- add extern declarations.
+Patch1:         libmpcdec-extern.patch
 BuildRequires:  cmake
 BuildRequires:  libcuefile-devel
 BuildRequires:  libreplaygain-devel
@@ -70,6 +72,7 @@ been developed.
 %prep
 %setup -q -n %{name}_src_%{version}
 %patch0
+%patch1
 
 %build
 # Fix rpmlint warning "version-control-internal-file"