diff --git a/src/Adapt.jl b/src/Adapt.jl
index b70a545..17c8cc3 100644
--- a/src/Adapt.jl
+++ b/src/Adapt.jl
@@ -52,4 +52,6 @@ include("arrays.jl")
 # helpers
 include("macro.jl")
 
+function backend end
+
 end # module