diff --git a/example/audio/main.go b/example/audio/main.go
index 8837196..7115057 100644
--- a/example/audio/main.go
+++ b/example/audio/main.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build darwin linux
+
 // An app that makes a sound as the gopher hits the walls of the screen.
 //
 // Note: This demo is an early preview of Go 1.5. In order to build this
diff --git a/example/basic/main.go b/example/basic/main.go
index b48096c..d04c621 100644
--- a/example/basic/main.go
+++ b/example/basic/main.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build darwin linux
+
 // An app that draws a green triangle on a red background.
 //
 // Note: This demo is an early preview of Go 1.5. In order to build this
diff --git a/example/network/main.go b/example/network/main.go
index 25e1cba..e720df3 100644
--- a/example/network/main.go
+++ b/example/network/main.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build darwin linux
+
 // An app that paints green if golang.org is reachable when the app first
 // starts, or red otherwise.
 //
diff --git a/example/sprite/main.go b/example/sprite/main.go
index b5c06f9..0922b3a 100644
--- a/example/sprite/main.go
+++ b/example/sprite/main.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build darwin linux
+
 // An app that demonstrates the sprite package.
 //
 // Note: This demo is an early preview of Go 1.5. In order to build this