diff --git a/src/args.jl b/src/args.jl
index d0e013b2..661c757b 100644
--- a/src/args.jl
+++ b/src/args.jl
@@ -1213,7 +1213,6 @@ convertLegendValue(val::Nothing) = :none
 convertLegendValue(v::Union{Tuple, NamedTuple}) = convertLegendValue.(v)
 convertLegendValue(v::Tuple{S,T}) where {S<:Real, T<:Real} = v
 convertLegendValue(v::Tuple{<:Real,Symbol}) = v
-convertLegendValue(v::Real) = v
 convertLegendValue(v::AbstractArray) = map(convertLegendValue, v)
 
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