diff --git a/gaboshlib/g_read_csv.sh b/gaboshlib/g_read_csv.sh
index ba5cdd0..f77eb6e 100644
--- a/gaboshlib/g_read_csv.sh
+++ b/gaboshlib/g_read_csv.sh
@@ -40,7 +40,7 @@ function g_read_csv {
   # prepare varnames from headline(s)
   for g_headline_item in "${g_csv_headline_array_ref[@]}"
   do
-    g_csv_headline_array+="${g_headline_item//[^a-zA-Z0-9]/}"
+    g_csv_headline_array+=("${g_headline_item//[^a-zA-Z0-9]/}")
   done
 
   # read last lines if defined or complete csv file