diff --git a/prog/plugin/main.go b/prog/plugin/main.go
index 8a9c4ac9..cf6d0ad0 100644
--- a/prog/plugin/main.go
+++ b/prog/plugin/main.go
@@ -22,7 +22,7 @@ import (
 	"github.com/weaveworks/weave/plugin/skel"
 )
 
-var version = "(unreleased version)"
+var version = "unreleased"
 
 var Log = common.Log
 
diff --git a/prog/weave-kube/launch.sh b/prog/weave-kube/launch.sh
index ad7ddef9..2438c3d5 100755
--- a/prog/weave-kube/launch.sh
+++ b/prog/weave-kube/launch.sh
@@ -19,13 +19,13 @@ fi
 echo 1 > /proc/sys/net/bridge/bridge-nf-call-iptables
 
 SOURCE_BINARY=/usr/bin/weaveutil
-VERSION=$(/home/weave/weaver --version | sed -E 's/weave router (.*?)/\1/')
+VERSION=$(/home/weave/weaver $EXTRA_ARGS --version | sed -e 's/weave router //')
 PLUGIN="weave-plugin-$VERSION"
 
 install_cni_plugin() {
     mkdir -p $1 || return 1
-    if [ ! -f $1/$PLUGIN ]; then
-        cp "$SOURCE_BINARY" $1/$PLUGIN
+    if [ ! -f "$1/$PLUGIN" ]; then
+        cp "$SOURCE_BINARY" "$1/$PLUGIN"
     fi
 }
 
@@ -33,7 +33,7 @@ upgrade_cni_plugin_symlink() {
     # Remove potential temporary symlink from previous failed upgrade:
     rm -f $1/$2.tmp
     # Atomically create a symlink to the plugin:
-    ln -s $1/$PLUGIN $1/$2.tmp && mv -f $1/$2.tmp $1/$2
+    ln -s "$1/$PLUGIN" $1/$2.tmp && mv -f $1/$2.tmp $1/$2
 }
 
 upgrade_cni_plugin() {
diff --git a/prog/weave-npc/main.go b/prog/weave-npc/main.go
index 58b3e994..ecc26d2a 100644
--- a/prog/weave-npc/main.go
+++ b/prog/weave-npc/main.go
@@ -24,7 +24,7 @@ import (
 )
 
 var (
-	version     = "(unreleased)"
+	version     = "unreleased"
 	metricsAddr string
 )
 
diff --git a/prog/weaveproxy/main.go b/prog/weaveproxy/main.go
index a2688dee..d8e58b21 100644
--- a/prog/weaveproxy/main.go
+++ b/prog/weaveproxy/main.go
@@ -11,7 +11,7 @@ import (
 	"github.com/weaveworks/weave/proxy"
 )
 
-var version = "(unreleased version)"
+var version = "unreleased"
 
 var Log = common.Log
 
diff --git a/prog/weaver/main.go b/prog/weaver/main.go
index 00d08de0..92cb5bba 100644
--- a/prog/weaver/main.go
+++ b/prog/weaver/main.go
@@ -27,7 +27,7 @@ import (
 	weave "github.com/weaveworks/weave/router"
 )
 
-var version = "(unreleased version)"
+var version = "unreleased"
 
 var Log = common.Log
 
diff --git a/site/troubleshooting.md b/site/troubleshooting.md
index 4f67e739..b5c2d2b0 100644
--- a/site/troubleshooting.md
+++ b/site/troubleshooting.md
@@ -302,7 +302,7 @@ latest snapshot release using:
     sudo chmod a+x /usr/local/bin/weave
     weave setup
 
-Snapshot releases report the script version as "(unreleased version)",
+Snapshot releases report the script version as "unreleased",
 and the container image versions as git hashes.
 
 
diff --git a/weave b/weave
index dadd9b02..a4f787cc 100755
--- a/weave
+++ b/weave
@@ -3,9 +3,9 @@ set -e
 
 [ -n "$WEAVE_DEBUG" ] && set -x
 
-SCRIPT_VERSION="(unreleased version)"
+SCRIPT_VERSION="unreleased"
 IMAGE_VERSION=latest
-[ "$SCRIPT_VERSION" = "(unreleased version)" ] || IMAGE_VERSION=$SCRIPT_VERSION
+[ "$SCRIPT_VERSION" = "unreleased" ] || IMAGE_VERSION=$SCRIPT_VERSION
 IMAGE_VERSION=${WEAVE_VERSION:-$IMAGE_VERSION}
 
 # - Docker versions prior to 1.6 cannot pull images from DockerHub