diff --git a/internal/graphics/vertex.go b/internal/graphics/vertex.go
index ce5be79c0..06ccc3274 100644
--- a/internal/graphics/vertex.go
+++ b/internal/graphics/vertex.go
@@ -68,7 +68,7 @@ type verticesBackend struct {
 }
 
 func verticesBackendFloat32Size(size int) int {
-	l := 1024
+	l := 128 * VertexFloatNum
 	for l < size {
 		l *= 2
 	}