diff --git a/client/pool.go b/client/pool.go
index 23efb74..08933bf 100644
--- a/client/pool.go
+++ b/client/pool.go
@@ -60,10 +60,11 @@ type Pool struct {
 }
 
 // Return a new pool.
-func NewPool() (pool *Pool) {
+func NewPool(selectionFn SelectionHandler, errorFn ErrorHandler) (pool *Pool) {
 	return &Pool{
 		clients:          make(map[string]*poolClient, poolSize),
-		SelectionHandler: SelectWithRate,
+		SelectionHandler: selectionFn,
+		ErrorHandler:     errorFn,
 	}
 }
 
diff --git a/client/pool_test.go b/client/pool_test.go
index 5324db9..bb85aa8 100644
--- a/client/pool_test.go
+++ b/client/pool_test.go
@@ -5,7 +5,7 @@ import (
 )
 
 var (
-	pool = NewPool()
+	pool = NewPool(selectWithRate, func(error) {})
 )
 
 func TestPoolAdd(t *testing.T) {