diff --git a/tools/build_kvm.sh b/tools/build_kvm.sh
index 6c364cb..c047803 100755
--- a/tools/build_kvm.sh
+++ b/tools/build_kvm.sh
@@ -52,7 +52,7 @@ CONTAINER_NAME=${CONTAINER_NAME:-kvmstack}
 BASE_IMAGE=$KVMSTACK_DIR/images/$DIST_NAME.raw
 
 # Copy of base image, which we pre-install with tasty treats
-BASE_IMAGE_COPY=$IMAGES_DIR/$DIST_NAME.$CONTAINER_NAME.raw.copy
+VM_IMAGE=$IMAGES_DIR/$DIST_NAME.$CONTAINER_NAME.raw
 
 # Mop up after previous runs
 virsh destroy $CONTAINER_NAME
@@ -76,8 +76,8 @@ if [ ! -e $IMAGES_DIR/$IMAGE_FNAME ]; then
 fi
 
 # Create a copy of the base image
-if [ ! -e $BASE_IMAGE_COPY ]; then
-    cp -p $BASE_IMAGE $BASE_IMAGE_COPY
+if [ ! -e $VM_IMAGE ]; then
+    cp -p $BASE_IMAGE $VM_IMAGE
 fi
 
 # Unmount the copied base image
@@ -108,7 +108,7 @@ trap kill_unmount SIGINT
 DEST=${DEST:-/opt/stack}
 
 # Mount the file system
-mount -o loop,offset=32256 $BASE_IMAGE_COPY  $COPY_DIR
+mount -o loop,offset=32256 $VM_IMAGE  $COPY_DIR
 
 # git clone only if directory doesn't exist already.  Since ``DEST`` might not
 # be owned by the installation user, we create the directory and change the
@@ -231,7 +231,7 @@ cd $VM_DIR
 rm -f $VM_DIR/disk
 
 # Create our instance fs
-qemu-img create -f qcow2 -b $BASE_IMAGE_COPY disk
+qemu-img create -f qcow2 -b $VM_IMAGE disk
 
 sleep 5