diff --git a/test/ArrayDictionary.jl b/test/ArrayDictionary.jl
index 6bb2594..75d81b7 100644
--- a/test/ArrayDictionary.jl
+++ b/test/ArrayDictionary.jl
@@ -42,7 +42,7 @@
     @test_throws IndexError insert!(d, 10, 12)
     @test d[10] == 11
     set!(d, 10, 12)
-    @test length(d) == 1setwith!(+, d, 10.0, 2.0)
+    @test length(d) == setwith!(+, d, 10.0, 2.0)
     @test length(d) == 1
     @test d[10] == 14
     setwith!(+, d, 2.0, 2.0)