diff --git a/src/RuntimeGeneratedFunctions.jl b/src/RuntimeGeneratedFunctions.jl
index 5624dc2..d8c847c 100644
--- a/src/RuntimeGeneratedFunctions.jl
+++ b/src/RuntimeGeneratedFunctions.jl
@@ -376,6 +376,9 @@ function Serialization.deserialize(s::AbstractSerializer,
     B === Nothing ? drop_expr(f) : f
 end
 
+# achieve deepcopy(f)===f behavior similar to "normal" julia functions
+Base.deepcopy_internal(f::RuntimeGeneratedFunction, stackdict::IdDict) = f
+
 @specialize
 
 end
diff --git a/test/runtests.jl b/test/runtests.jl
index 536876b..3db5a76 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -184,3 +184,8 @@ deserialized_f, deserialized_g = deserialize(buf)
 @test deserialized_f.body isa Expr
 @test deserialized_g(12) == "Serialization with dropped body. y=12"
 @test deserialized_g.body isa Nothing
+
+# deepcopy
+ff = @RuntimeGeneratedFunction(:(x -> [x, x+1]))
+@test deepcopy(ff) == ff
+@test deepcopy(ff) === ff