diff --git a/libmpcdec-fastmath-no-const.patch b/libmpcdec-fastmath-no-const.patch
new file mode 100644
index 0000000..6e5d8f6
--- /dev/null
+++ b/libmpcdec-fastmath-no-const.patch
@@ -0,0 +1,36 @@
+diff -urp musepack_src_r475.orig/common/fastmath.c musepack_src_r475/common/fastmath.c
+--- musepack_src_r475.orig/common/fastmath.c	2007-06-09 09:43:34.000000000 -0500
++++ musepack_src_r475/common/fastmath.c	2020-09-14 10:39:01.942623458 -0500
+@@ -21,10 +21,10 @@
+ 
+ #ifdef FAST_MATH
+ 
+-const float  tabatan2   [ 2*TABSTEP+1] [2];
+-const float  tabcos     [26*TABSTEP+1] [2];
+-const float  tabsqrt_ex [256];
+-const float  tabsqrt_m  [   TABSTEP+1] [2];
++float  tabatan2   [ 2*TABSTEP+1] [2];
++float  tabcos     [26*TABSTEP+1] [2];
++float  tabsqrt_ex [256];
++float  tabsqrt_m  [   TABSTEP+1] [2];
+ 
+ 
+ void   Init_FastMath ( void )
+diff -urp musepack_src_r475.orig/include/mpc/mpcmath.h musepack_src_r475/include/mpc/mpcmath.h
+--- musepack_src_r475.orig/include/mpc/mpcmath.h	2009-07-31 07:37:44.000000000 -0500
++++ musepack_src_r475/include/mpc/mpcmath.h	2020-09-14 10:44:15.624279644 -0500
+@@ -87,10 +87,10 @@ static mpc_inline mpc_int32_t mpc_lrintf
+ # define IFLOORF(x)   my_ifloor ((float)(x))
+ 
+ void   Init_FastMath ( void );
+-extern const float  tabatan2   [] [2];
+-extern const float  tabcos     [] [2];
+-extern const float  tabsqrt_ex [];
+-extern const float  tabsqrt_m  [] [2];
++extern float  tabatan2   [] [2];
++extern float  tabcos     [] [2];
++extern float  tabsqrt_ex [];
++extern float  tabsqrt_m  [] [2];
+ 
+ static mpc_inline float my_atan2 ( float x, float y )
+ {
diff --git a/musepack.changes b/musepack.changes
index 58c962c..f4bc38f 100644
--- a/musepack.changes
+++ b/musepack.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Sep 14 15:40:02 UTC 2020 - Michael Gorse <mgorse@suse.com>
+
+- Add libmpcdec-fastmath-no-const.patch: remove const declarations
+  from some arrays which should not have them (boo#1176374).
+
 -------------------------------------------------------------------
 Wed Jan  8 15:52:02 UTC 2020 - Michael Gorse <mgorse@suse.com>
 
diff --git a/musepack.spec b/musepack.spec
index b90f65f..2f88d19 100644
--- a/musepack.spec
+++ b/musepack.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package musepack
 #
-# Copyright (c) 2020 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2020 SUSE LLC
 # Copyright (c) 2013 Asterios Dramis <asterios.dramis@gmail.com>.
 #
 # All modifications and additions to the file contributed by third parties
@@ -32,6 +32,7 @@ Source99:       baselibs.conf
 Patch0:         libmpcdec.patch
 # PATCh-FIX-UPSTREAM libmpcdec-extern.patch boo#1160284 mgorse@suse.com -- add extern declarations.
 Patch1:         libmpcdec-extern.patch
+Patch2:         libmpcdec-fastmath-no-const.patch
 BuildRequires:  cmake
 BuildRequires:  libcuefile-devel
 BuildRequires:  libreplaygain-devel
@@ -73,6 +74,7 @@ been developed.
 %setup -q -n %{name}_src_%{version}
 %patch0
 %patch1
+%patch2 -p1
 
 %build
 # Fix rpmlint warning "version-control-internal-file"