diff --git a/test/runtests.jl b/test/runtests.jl
index 867a61887..58ae5eae1 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1066,6 +1066,7 @@ end
 # 0.7.0-DEV.3216
 @test Compat.AbstractDateTime === (isdefined(Compat.Dates, :AbstractDateTime) ? Compat.Dates.AbstractDateTime : Compat.Dates.TimeType)
 @test Compat.AbstractDateTime <: Compat.Dates.TimeType
+@test Compat.Dates.DateTime <: Compat.AbstractDateTime
 
 if VERSION < v"0.6.0"
     include("deprecated.jl")