diff --git a/src/influence.jl b/src/influence.jl
index 4e294407..27ed018c 100644
--- a/src/influence.jl
+++ b/src/influence.jl
@@ -9,7 +9,6 @@ if VERSION >= v"1.3.0-DEV.94"
     const _diagm = diagm
 else
     function _diagm(n::Integer, m::Integer, v::AbstractVector)
-        Base.require_one_based_indexing(v)
         length(v) == min(n, m) || throw(DimensionMismatch())
         D = similar(v, (n, m))
         fill!(D, zero(eltype(D)))