diff --git a/pool.go b/pool.go
index 9123572..6402be3 100644
--- a/pool.go
+++ b/pool.go
@@ -409,6 +409,7 @@ func (p *Pool) CreateResource(ctx context.Context) error {
 	// If closed while constructing resource then destroy it and return an error
 	if p.closed {
 		go p.destructResourceValue(res.value)
+		p.cond.L.Unlock()
 		return ErrClosedPool
 	}
 	p.allResources = append(p.allResources, res)