diff --git a/safe.go b/safe.go
new file mode 100644
index 0000000..d66dc56
--- /dev/null
+++ b/safe.go
@@ -0,0 +1,7 @@
+// +build appengine
+
+package redis
+
+func bytesToString(b []byte) string {
+	return string(b)
+}
diff --git a/unsafe.go b/unsafe.go
index 1c4d55f..3cd8d1c 100644
--- a/unsafe.go
+++ b/unsafe.go
@@ -1,3 +1,5 @@
+// +build !appengine
+
 package redis
 
 import (