diff --git a/render/render.go b/render/render.go
index c072eb4..c907dc3 100644
--- a/render/render.go
+++ b/render/render.go
@@ -47,7 +47,9 @@ func (n *BlockNode) render(w *trimWriter, ctx nodeContext) Error {
 	if renderer == nil {
 		panic(fmt.Errorf("unset renderer for %v", n))
 	}
+	w.TrimLeft(n.TrimLeft)
 	err := renderer(w, rendererContext{ctx, nil, n})
+	w.TrimRight(n.TrimRight)
 	return wrapRenderError(err, n)
 }