diff --git a/Project.toml b/Project.toml
index ff74e438..38710aaf 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "StaticArrays"
 uuid = "90137ffa-7385-5640-81b9-e52037218182"
-version = "1.5.17"
+version = "1.5.18"
 
 [deps]
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
diff --git a/src/mapreduce.jl b/src/mapreduce.jl
index 82ce532f..97c38760 100644
--- a/src/mapreduce.jl
+++ b/src/mapreduce.jl
@@ -130,6 +130,7 @@ end
     return quote
         @_inline_meta
         @inbounds $(Expr(:block, exprs...))
+        return dest
     end
 end
 
diff --git a/test/mapreduce.jl b/test/mapreduce.jl
index 1880fa8b..68f347f1 100644
--- a/test/mapreduce.jl
+++ b/test/mapreduce.jl
@@ -21,7 +21,7 @@ using Statistics: mean
         @test @inferred(map(+, normal_v1, mv2))::MVector{4,Int} == @MVector [6, 7, 8, 9]
         @test @inferred(map(+, mv1, normal_v2))::MVector{4,Int} == @MVector [6, 7, 8, 9]
 
-        map!(+, mv, v1, v2)
+        @test map!(+, mv, v1, v2) === mv
         @test mv == @MVector [6, 7, 8, 9]
         mv2 = MVector{4, Int}(undef)
         map!(x->x^2, mv2, v1)