diff --git a/Project.toml b/Project.toml
index fbd005e..73fbd44 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "NestedGraphs"
 uuid = "03c36417-ddab-428a-818d-5359aee292ef"
 authors = ["fchrstou <filippos.christou@ikr.uni-stuttgart.de> and contributors"]
-version = "0.2.1"
+version = "0.2.2"
 
 [deps]
 AbstractTrees = "1520ce14-60c1-5f80-bbc7-55ef81b5835c"
diff --git a/ext/NestedGraphsAttributeGraphsExt.jl b/ext/NestedGraphsAttributeGraphsExt.jl
index 39a112e..45bfb53 100644
--- a/ext/NestedGraphsAttributeGraphsExt.jl
+++ b/ext/NestedGraphsAttributeGraphsExt.jl
@@ -102,10 +102,10 @@ end
 
 
 # multilayer.jl
-function getsquashedgraph(ng::NestedGraph{T,R,N}, sqvertices::Vector{Vector{Q}}) where {T,R<:AbstractAttributeGraph,N,Q<:Integer}
+function NestedGraphs.getsquashedgraph(ng::NestedGraph{T,R,N}, sqvertices::Vector{Vector{Q}}) where {T,R<:AbstractAttributeGraph,N,Q<:Integer}
 #    squashedgraph = ng.flatgr |> deepcopy |> adjacency_matrix |> SimpleGraph
-    squashedgraph = getsimplegraphcopy(ng)
-    _rec_merge_vertices!(SimpleGraph(squashedgraph), sqvertices)
+    squashedgraph = NestedGraphs.getsimplegraphcopy(ng)
+    NestedGraphs._rec_merge_vertices!(SimpleGraph(squashedgraph), sqvertices)
 end
 
 end