diff --git a/zio/csvio/writer.go b/zio/csvio/writer.go
index fb70ca2965..adab723189 100644
--- a/zio/csvio/writer.go
+++ b/zio/csvio/writer.go
@@ -103,7 +103,7 @@ func formatValue(typ zed.Type, bytes zcode.Bytes) string {
 	return zson.FormatValue(zed.NewValue(typ, bytes))
 }
 
-func fieldsEqual(a, b []zed.Field) bool {
+func fieldNamesEqual(a, b []zed.Field) bool {
 	return slices.EqualFunc(a, b, func(a, b zed.Field) bool {
 		return a.Name == b.Name
 	})