diff --git a/src/dataframerow/dataframerow.jl b/src/dataframerow/dataframerow.jl
index f8a035262..5107c8b6a 100644
--- a/src/dataframerow/dataframerow.jl
+++ b/src/dataframerow/dataframerow.jl
@@ -264,7 +264,7 @@ index(r::DataFrameRow) = getfield(r, :colindex)
 is_column_insertion_allowed(dfr::DataFrameRow) = index(dfr) isa Index
 
 Base.@propagate_inbounds function Base.setindex!(dfr::DataFrameRow, value, idx)
-    if colinds isa SymbolOrString && columnindex(dfr, colinds) == 0
+    if idx isa SymbolOrString && columnindex(dfr, idx) == 0
         if !is_column_insertion_allowed(dfr)
             throw(ArgumentError("creating new columns in a DataFrameRow that subsets " *
                                 "columns of its parent data frame is disallowed"))
@@ -273,7 +273,7 @@ Base.@propagate_inbounds function Base.setindex!(dfr::DataFrameRow, value, idx)
         newcol = similar(val, Union{T,Missing}, nrow(parent(dfr)))
         fill!(newcol, missing)
         newcol[row(dfr)] = val
-        parent(dfr)[!, colinds] = newcol
+        parent(dfr)[!, idx] = newcol
     else
         setindex!(parent(dfr), value, row(dfr), parentcols(index(dfr), idx))
     end