diff --git a/gaboshlib/g_read_csv.sh b/gaboshlib/g_read_csv.sh
index 1005ea9..6876f00 100644
--- a/gaboshlib/g_read_csv.sh
+++ b/gaboshlib/g_read_csv.sh
@@ -8,7 +8,7 @@ function g_read_csv {
   local g_headline=$3
   local g_separator=$4
 
-  local g_headline_item i l r
+  local g_headline_item i l r g_csv_headline_array
 
   # check for individual separator
   [ -z "$g_separator" ] && g_separator=","
@@ -39,6 +39,7 @@ function g_read_csv {
   [ -z "$g_headline" ] && g_headline=$(head -n1 "${g_csvfile}")
 
   # read the headline
+  unset g_csv_headline_array_ref
   g_array "$g_headline" g_csv_headline_array_ref $g_separator
 
   # prepare varnames from headline(s)