diff --git a/sbin/install_support.sh b/sbin/install_support.sh
index 209c1e562d617971053ed91ed2864878bf7552f0..f7a86bf608a603283d8fb146749a82eb95a5c0ef 100755
--- a/sbin/install_support.sh
+++ b/sbin/install_support.sh
@@ -6,22 +6,22 @@ MY_DIR=`dirname $0` && cd $MY_DIR && MY_DIR=`pwd`
 if [ -z "${DM_ROOT_DIR}" ]; then
     DM_ROOT_DIR=$MY_DIR/..
 fi
-DM_SUPPORT=$DM_ROOT_DIR/../support
+DM_SUPPORT_DIR=$DM_ROOT_DIR/../support
 
 execute() {
     echo "Executing: $@"
     eval "$@"
 }
 
-if [ ! -d $DM_SUPPORT ]; then
-    echo "Creating new DM support directory $DM_SUPPORT."
-    cd `dirname $DM_SUPPORT`
+if [ ! -d $DM_SUPPORT_DIR ]; then
+    echo "Creating new DM support directory $DM_SUPPORT_DIR."
+    cd `dirname $DM_SUPPORT_DIR`
     execute svn co $DM_SVN_URL/support support
 fi
-cd $DM_SUPPORT
+cd $DM_SUPPORT_DIR
 execute svn update
-execute $DM_SUPPORT/bin/clean_all.sh
-execute $DM_SUPPORT/bin/install_all.sh
+execute $DM_SUPPORT_DIR/bin/clean_all.sh
+execute $DM_SUPPORT_DIR/bin/install_all.sh