diff --git a/src/ADTypes.jl b/src/ADTypes.jl
index 5893917..2b2fca8 100644
--- a/src/ADTypes.jl
+++ b/src/ADTypes.jl
@@ -30,10 +30,6 @@ function AutoForwardDiff(; chunksize = nothing, tag = nothing)
     AutoForwardDiff{chunksize,typeof(tag)}(tag)
 end
 
-function AutoForwardDiff(chunksize = nothing; tag = nothing)
-    AutoForwardDiff{chunksize,typeof(tag)}(tag)
-end
-
 struct AutoReverseDiff <: AbstractADType
     compile::Bool
 end
@@ -69,9 +65,5 @@ function AutoSparseForwardDiff(; chunksize = nothing, tag = nothing)
     AutoSparseForwardDiff{chunksize,typeof(tag)}(tag)
 end
 
-function AutoSparseForwardDiff(chunksize = nothing; tag = nothing)
-    AutoSparseForwardDiff{chunksize, typeof(tag)}(tag)
-end
-
 export AutoFiniteDiff, AutoFiniteDifferences, AutoForwardDiff, AutoReverseDiff, AutoZygote, AutoEnzyme, AutoTracker, AutoModelingToolkit, AutoSparseFiniteDiff, AutoSparseForwardDiff
 end
diff --git a/test/runtests.jl b/test/runtests.jl
index c5c626d..d309cf6 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -31,11 +31,6 @@ struct CustomTag end
     @test adtype isa ADTypes.AbstractADType
     @test adtype isa AutoForwardDiff{10,CustomTag}
 
-    adtype = AutoForwardDiff(10)
-    @test adtype isa ADTypes.AbstractADType
-    @test adtype isa AutoForwardDiff{10}
-
-
     adtype = AutoReverseDiff()
     @test adtype isa ADTypes.AbstractADType
     @test adtype isa AutoReverseDiff
@@ -82,10 +77,6 @@ struct CustomTag end
     @test adtype isa ADTypes.AbstractADType
     @test adtype isa AutoSparseForwardDiff{nothing}
 
-    adtype = AutoSparseForwardDiff(10)
-    @test adtype isa ADTypes.AbstractADType
-    @test adtype isa AutoSparseForwardDiff{10}
-  
     adtype = AutoEnzyme()
     @test adtype isa ADTypes.AbstractADType
     @test adtype isa AutoEnzyme{Nothing}
@@ -95,5 +86,4 @@ struct CustomTag end
     adtype = AutoEnzyme(; mode = Val(:Reverse))
     @test adtype isa ADTypes.AbstractADType
     @test adtype isa AutoEnzyme{Val{:Reverse}}
-
 end