diff --git a/web/chanpool.go b/web/chanpool.go
index fbe2977..26b675e 100644
--- a/web/chanpool.go
+++ b/web/chanpool.go
@@ -1,4 +1,4 @@
-// +build !go1.3
+// +build !go1.3 appengine
 
 package web
 
diff --git a/web/cpool.go b/web/cpool.go
index 59f8764..a95333c 100644
--- a/web/cpool.go
+++ b/web/cpool.go
@@ -1,4 +1,4 @@
-// +build go1.3
+// +build go1.3,!appengine
 
 package web