diff --git a/src/chordal/decomposition/psd_completion.jl b/src/chordal/decomposition/psd_completion.jl
index 74d185ac..c629ca2b 100644
--- a/src/chordal/decomposition/psd_completion.jl
+++ b/src/chordal/decomposition/psd_completion.jl
@@ -70,13 +70,13 @@ function psd_complete!(A::AbstractMatrix{T}, pattern::SparsityPattern) where {T
         #sorted using numerical ordering σ(i)
         α = get_separators(sntree, j)
 
+        ν = collect(ν) #unborks indexing below
+        α = collect(α) #unborks indexing below
+
         # index set containing the row indices of the lower-triangular zeros in 
         # column i (i: representative index) sorted by σ(i)
         i = ν[1]
 
-        ν = collect(ν) #unborks indexing below
-        α = collect(α) #unborks indexing below
-
         η = collect(i+1:1:N)
         filter!(x -> !insorted(x, α) && !insorted(x, ν), η)
 
@@ -103,4 +103,3 @@ function psd_complete!(A::AbstractMatrix{T}, pattern::SparsityPattern) where {T
     A[:, :] =  W[ip, ip]
 
 end
-