diff --git a/src/multi_resolution/multi_resolution.jl b/src/multi_resolution/multi_resolution.jl
index e905b9cd6..367f0ef4e 100644
--- a/src/multi_resolution/multi_resolution.jl
+++ b/src/multi_resolution/multi_resolution.jl
@@ -1 +1,2 @@
 include("particle_refinement.jl")
+include("resize.jl")