diff --git a/src/parameters.jl b/src/parameters.jl
index e546c1c5..bc31aa7b 100644
--- a/src/parameters.jl
+++ b/src/parameters.jl
@@ -112,5 +112,4 @@ The default placeholder value for parameters argument.
 """
 const EMPTY_PARAMS = ParamsDict()
 
-kwargs2dict(kwargs::Vector{Any}) =
-    Dict(Tuple{Symbol,Any}[(convert(Symbol, k), convert(Any,v)) for (k,v) in kwargs])
+kwargs2dict(kwargs::Iterators.Pairs{Symbol}) = ParamsDict(kwargs)