diff --git a/src/tracker/scalar.jl b/src/tracker/scalar.jl
index 1b6098fb..ad7b643d 100644
--- a/src/tracker/scalar.jl
+++ b/src/tracker/scalar.jl
@@ -23,6 +23,8 @@ end
 
 Base.decompose(x::TrackedReal) = Base.decompose(data(x))
 
+Base.convert(::Type{T}, x::TrackedReal{S}) where {T<:Real,S} = convert(T, data(x))
+
 Base.convert(::Type{TrackedReal{T}}, x::TrackedReal{T}) where T = x
 
 Base.convert(::Type{TrackedReal{T}}, x::Real) where T = TrackedReal(convert(T, x))
diff --git a/test/tracker.jl b/test/tracker.jl
index a4772f2e..7d7168ad 100644
--- a/test/tracker.jl
+++ b/test/tracker.jl
@@ -40,7 +40,7 @@ function promotiontest(f, A, B, C)
   if all(ndims.((A,B,C)) .≤ 2) && f ∈ [hcat, vcat]
     r3 = f(A, B, param(C))
   else
-    @test_throws MethodError f(A, B, param(C)) # until julia#20815 is resolved
+    @test_broken f(A, B, param(C)) # until julia#20815 is resolved
     r3 = r2
   end
   r4 = f(param(A), param(B), param(C))