diff --git a/src/PolynomialRoots.jl b/src/PolynomialRoots.jl
index a1e4d87..7cc6a1a 100644
--- a/src/PolynomialRoots.jl
+++ b/src/PolynomialRoots.jl
@@ -603,7 +603,7 @@ function roots(poly::AbstractVector{<:Number}, roots::AbstractVector{<:Number};
                epsilon::AbstractFloat=NaN, polish::Bool=false)
     degree = length(poly) - 1
     @assert degree == length(roots) "`poly' must have one element more than `roots'"
-    roots!(promote(float.(complex(roots)), float.(complex(poly)))...,
+    roots!(promote(float.(complex.(roots)), float.(complex.(poly)))...,
            epsilon, degree, polish)
 end
 
@@ -731,13 +731,13 @@ function roots5(poly::AbstractVector{<:Number}, roots::AbstractVector{<:Number};
                 epsilon::AbstractFloat=NaN)
     @assert length(poly) == 6 "Use `roots' function for polynomials of degree != 5"
     @assert length(roots) == 5 "`roots' vector must have 5 elements"
-    return roots5!(promote(float.(complex(roots)), float.(complex(poly)))...,
+    return roots5!(promote(float.(complex.(roots)), float.(complex.(poly)))...,
                    epsilon, true)
 end
 
 function roots5(poly::AbstractVector{N}; epsilon::AbstractFloat=NaN) where {N<:Number}
     @assert length(poly) == 6 "Use `roots' function for polynomials of degree != 5"
-    return roots5!(zeros(Complex{real(float(N))},  5), float.(complex(poly)),
+    return roots5!(zeros(Complex{real(float(N))},  5), float.(complex.(poly)),
                    epsilon, false)
 end