diff --git a/serving/samples/helloworld-clojure/README.md b/serving/samples/helloworld-clojure/README.md
index 9c96f44ad72..f5f397720d8 100644
--- a/serving/samples/helloworld-clojure/README.md
+++ b/serving/samples/helloworld-clojure/README.md
@@ -1,8 +1,8 @@
 # Hello World - Clojure sample
 
 A simple web app written in Clojure that you can use for testing.
-It reads in an env variable `TARGET` and prints "Hello World: ${TARGET}!". If
-TARGET is not specified, it will use "NOT SPECIFIED" as the TARGET.
+It reads in an env variable `TARGET` and prints "Hello ${TARGET}!". If
+TARGET is not specified, it will use "World" as the TARGET.
 
 ## Prerequisites
 
@@ -29,10 +29,10 @@ following instructions recreate the source files from this folder.
     (defn handler [request]
       {:status 200
        :headers {"Content-Type" "text/html"}
-       :body (str "Hello World: "
+       :body (str "Hello "
                   (if-let [target (System/getenv "TARGET")]
                     target
-                    "NOT SPECIFIED")
+                    "World")
                   "!\n")})
 
     (defn -main [& args]
diff --git a/serving/samples/helloworld-clojure/src/helloworld/core.clj b/serving/samples/helloworld-clojure/src/helloworld/core.clj
index da005104063..23cac49860b 100644
--- a/serving/samples/helloworld-clojure/src/helloworld/core.clj
+++ b/serving/samples/helloworld-clojure/src/helloworld/core.clj
@@ -5,10 +5,10 @@
 (defn handler [request]
   {:status 200
    :headers {"Content-Type" "text/html"}
-   :body (str "Hello World: "
+   :body (str "Hello "
               (if-let [target (System/getenv "TARGET")]
                 target
-                "NOT SPECIFIED")
+                "World")
               "!\n")})
 
 (defn -main [& args]
diff --git a/serving/samples/helloworld-csharp/README.md b/serving/samples/helloworld-csharp/README.md
index 4dbdc96a0f4..5e0f29dfe12 100644
--- a/serving/samples/helloworld-csharp/README.md
+++ b/serving/samples/helloworld-csharp/README.md
@@ -1,8 +1,8 @@
 # Hello World - .NET Core sample
 
 A simple web app written in C# using .NET Core 2.1 that you can use for testing.
-It reads in an env variable `TARGET` and prints "Hello World: ${TARGET}!". If
-TARGET is not specified, it will use "NOT SPECIFIED" as the TARGET.
+It reads in an env variable `TARGET` and prints "Hello ${TARGET}!". If
+TARGET is not specified, it will use "World" as the TARGET.
 
 ## Prerequisites
 
diff --git a/serving/samples/helloworld-go/README.md b/serving/samples/helloworld-go/README.md
index 3ce16f29c98..cce809681ce 100644
--- a/serving/samples/helloworld-go/README.md
+++ b/serving/samples/helloworld-go/README.md
@@ -1,8 +1,8 @@
 # Hello World - Go sample
 
 A simple web app written in Go that you can use for testing.
-It reads in an env variable `TARGET` and prints "Hello World: ${TARGET}!". If
-TARGET is not specified, it will use "NOT SPECIFIED" as the TARGET.
+It reads in an env variable `TARGET` and prints "Hello ${TARGET}!". If
+TARGET is not specified, it will use "World" as the TARGET.
 
 ## Prerequisites
 
diff --git a/serving/samples/helloworld-haskell/README.md b/serving/samples/helloworld-haskell/README.md
index 02299acac01..e5a5d9b6d15 100644
--- a/serving/samples/helloworld-haskell/README.md
+++ b/serving/samples/helloworld-haskell/README.md
@@ -1,8 +1,8 @@
 # Hello World - Haskell sample
 
 A simple web app written in Haskell that you can use for testing.
-It reads in an env variable `TARGET` and prints "Hello World: ${TARGET}!". If
-TARGET is not specified, it will use "NOT SPECIFIED" as the TARGET.
+It reads in an env variable `TARGET` and prints "Hello ${TARGET}!". If
+TARGET is not specified, it will use "World" as the TARGET.
 
 ## Prerequisites
 
diff --git a/serving/samples/helloworld-java/README.md b/serving/samples/helloworld-java/README.md
index 38c62c55a85..9946fc20a0e 100644
--- a/serving/samples/helloworld-java/README.md
+++ b/serving/samples/helloworld-java/README.md
@@ -1,8 +1,8 @@
 # Hello World - Spring Boot Java sample
 
 A simple web app written in Java using Spring Boot 2.0 that you can use for testing.
-It reads in an env variable `TARGET` and prints "Hello World: ${TARGET}!". If
-TARGET is not specified, it will use "NOT SPECIFIED" as the TARGET.
+It reads in an env variable `TARGET` and prints "Hello ${TARGET}!". If
+TARGET is not specified, it will use "World" as the TARGET.
 
 ## Prerequisites
 
diff --git a/serving/samples/helloworld-nodejs/README.md b/serving/samples/helloworld-nodejs/README.md
index e981f0c5686..171609c8862 100644
--- a/serving/samples/helloworld-nodejs/README.md
+++ b/serving/samples/helloworld-nodejs/README.md
@@ -1,8 +1,8 @@
 # Hello World - Node.js sample
 
 A simple web app written in Node.js that you can use for testing.
-It reads in an env variable `TARGET` and prints "Hello World: ${TARGET}!". If
-TARGET is not specified, it will use "NOT SPECIFIED" as the TARGET.
+It reads in an env variable `TARGET` and prints "Hello ${TARGET}!". If
+TARGET is not specified, it will use "World" as the TARGET.
 
 ## Prerequisites
 
diff --git a/serving/samples/helloworld-php/README.md b/serving/samples/helloworld-php/README.md
index b9303062f0c..ca22478b8fc 100644
--- a/serving/samples/helloworld-php/README.md
+++ b/serving/samples/helloworld-php/README.md
@@ -1,8 +1,8 @@
 # Hello World - PHP sample
 
 A simple web app written in PHP that you can use for testing.
-It reads in an env variable `TARGET` and prints "Hello World: ${TARGET}". If
-TARGET is not specified, it will use "NOT SPECIFIED" as the TARGET.
+It reads in an env variable `TARGET` and prints "Hello ${TARGET}!". If
+TARGET is not specified, it will use "World" as the TARGET.
 
 ## Prerequisites
 
diff --git a/serving/samples/helloworld-python/README.md b/serving/samples/helloworld-python/README.md
index b95b80f3b77..98a164a08da 100644
--- a/serving/samples/helloworld-python/README.md
+++ b/serving/samples/helloworld-python/README.md
@@ -1,8 +1,8 @@
 # Hello World - Python sample
 
 A simple web app written in Python that you can use for testing.
-It reads in an env variable `TARGET` and prints "Hello World: ${TARGET}!". If
-TARGET is not specified, it will use "NOT SPECIFIED" as the TARGET.
+It reads in an env variable `TARGET` and prints "Hello ${TARGET}!". If
+TARGET is not specified, it will use "World" as the TARGET.
 
 ## Prerequisites
 
diff --git a/serving/samples/helloworld-ruby/README.md b/serving/samples/helloworld-ruby/README.md
index c79601fa052..bd65982d834 100644
--- a/serving/samples/helloworld-ruby/README.md
+++ b/serving/samples/helloworld-ruby/README.md
@@ -1,8 +1,8 @@
 # Hello World - Ruby sample
 
 A simple wenb app written in Ruby that you can use for testing.
-It reads in an env variable `TARGET` and prints "Hello World: ${TARGET}!". If
-TARGET is not specified, it will use "NOT SPECIFIED" as the TARGET.
+It reads in an env variable `TARGET` and prints "Hello ${TARGET}!". If
+TARGET is not specified, it will use "World" as the TARGET.
 
 ## Prerequisites
 
diff --git a/serving/samples/helloworld-rust/README.md b/serving/samples/helloworld-rust/README.md
index bab1acce52d..aad4ac2201c 100644
--- a/serving/samples/helloworld-rust/README.md
+++ b/serving/samples/helloworld-rust/README.md
@@ -1,8 +1,8 @@
 # Hello World - Rust sample
 
 A simple web app written in Rust that you can use for testing.
-It reads in an env variable `TARGET` and prints "Hello World: ${TARGET}!". If
-TARGET is not specified, it will use "NOT SPECIFIED" as the TARGET.
+It reads in an env variable `TARGET` and prints "Hello ${TARGET}!". If
+TARGET is not specified, it will use "World" as the TARGET.
 
 ## Prerequisites