diff --git a/libraries/libmpcdec/libmpcdec.SlackBuild b/libraries/libmpcdec/libmpcdec.SlackBuild
index 905d0755e0..d981696152 100644
--- a/libraries/libmpcdec/libmpcdec.SlackBuild
+++ b/libraries/libmpcdec/libmpcdec.SlackBuild
@@ -28,6 +28,7 @@ VERSION=1.2.6
 ARCH=${ARCH:-i486}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
+
 CWD=$(pwd)
 TMP=${TMP:-/tmp/SBo}
 PKG=$TMP/package-$PRGNAM
@@ -35,8 +36,13 @@ OUTPUT=${OUTPUT:-/tmp}
 
 if [ "$ARCH" = "i486" ]; then
   SLKCFLAGS="-O2 -march=i486 -mtune=i686"
+  LIBDIRSUFFIX=""
 elif [ "$ARCH" = "i686" ]; then
   SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
 fi
 
 set -e
@@ -53,10 +59,11 @@ chmod -R u+w,go+r-w,a-s .
 CFLAGS="$SLKCFLAGS" \
 CXXFLAGS="$SLKCFLAGS" \
 ./configure \
-    --prefix=/usr \
-    --sysconfdir=/etc \
-    --localstatedir=/var \
-    --disable-static
+  --prefix=/usr \
+  --libdir=/usr/lib${LIBDIRSUFFIX} \
+  --sysconfdir=/etc \
+  --localstatedir=/var \
+  --disable-static
 
 make
 make install-strip DESTDIR=$PKG
@@ -69,4 +76,4 @@ mkdir -p $PKG/install
 cat $CWD/slack-desc > $PKG/install/slack-desc
 
 cd $PKG
-/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.tgz
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
diff --git a/libraries/libmpcdec/libmpcdec.info b/libraries/libmpcdec/libmpcdec.info
index 3ff1825749..05432b5b8d 100644
--- a/libraries/libmpcdec/libmpcdec.info
+++ b/libraries/libmpcdec/libmpcdec.info
@@ -2,7 +2,9 @@ PRGNAM="libmpcdec"
 VERSION="1.2.6"
 HOMEPAGE="http://www.musepack.net"
 DOWNLOAD="http://files.musepack.net/source/libmpcdec-1.2.6.tar.bz2"
+DOWNLOAD_x86_64=""
 MD5SUM="7f7a060e83b4278acf4b77d7a7b9d2c0"
+MD5SUM_x86_64=""
 MAINTAINER="ppr:kut"
 EMAIL="HMWiesinger@gmx.at"
 APPROVED="rworkman"