diff --git a/acroread/.md5sum b/acroread/.md5sum
index 8819b50d5..4b4da8c0a 100644
--- a/acroread/.md5sum
+++ b/acroread/.md5sum
@@ -1 +1,2 @@
 4834f13ee45c7b1be263fb89aa49d212  AdobeReader_enu-7.0.8-1.i386.tar.gz
+0e1641bd90c5721284c691944c2b7ba0  acroread-expr.patch
diff --git a/acroread/Pkgfile b/acroread/Pkgfile
index f846068a7..c438ff098 100644
--- a/acroread/Pkgfile
+++ b/acroread/Pkgfile
@@ -6,8 +6,9 @@
 
 name=acroread
 version=7.0.8
-release=1
-source=(http://ardownload.adobe.com/pub/adobe/reader/unix/7x/7.0.8/enu/AdobeReader_enu-7.0.8-1.i386.tar.gz)
+release=2
+source=(http://ardownload.adobe.com/pub/adobe/reader/unix/7x/7.0.8/enu/AdobeReader_enu-7.0.8-1.i386.tar.gz \
+	$name-expr.patch)
 PKGMK_NO_STRIP="yes"
 
 build() {
@@ -22,4 +23,7 @@ build() {
 	sed -i 's|REPLACE_ME|/usr/lib/Acrobat7/Reader|g' bin/acroread
 	ln -sf /usr/lib/Acrobat7/bin/acroread  $PKG/usr/bin/acroread
 	find . -type d | xargs chmod 755
+
+	cd $PKG/usr/lib/Acrobat7/bin
+	patch < $SRC/$name-expr.patch
 }
diff --git a/acroread/acroread-expr.patch b/acroread/acroread-expr.patch
new file mode 100644
index 000000000..b3c1726fb
--- /dev/null
+++ b/acroread/acroread-expr.patch
@@ -0,0 +1,21 @@
+--- acroread.orig	2006-08-04 01:45:40.000000000 +0200
++++ acroread	2006-08-04 01:47:39.000000000 +0200
+@@ -455,13 +455,13 @@
+             continue
+         fi
+ 
+-        len_version=`expr length $version`
+-        base_version=`expr substr "${base_version}0000000000" 1 $len_version`
+-        len_base_version=`expr length $base_version`
++        len_version=`expr length "$version"`
++        base_version=`expr substr "${base_version}0000000000" 1 "$len_version"`
++        len_base_version=`expr length "$base_version"`
+ 
+         while [ $len_version -gt $len_base_version ]; do
+-            base_version=`expr substr "${base_version}0000000000" 1 $len_version`
+-            len_base_version=`expr length $base_version`
++            base_version=`expr substr "${base_version}0000000000" 1 "$len_version"`
++            len_base_version=`expr length "$base_version"`
+         done
+ 
+     	if [ $version -ge $base_version ]; then