diff --git a/test/hardware.jl b/test/hardware.jl
index 1179572f307f6ca586bcf236f348f0beb4dfcbbc..a2007bf453bb3d28d855207cdc84a3d2f4669909 100644
--- a/test/hardware.jl
+++ b/test/hardware.jl
@@ -215,5 +215,5 @@ end
 @testset "KM3DB extensions" begin
     using KM3DB
     d = Detector(133)
-    @test 399 == length(d)
+    @test 398 == length(d)
 end