diff --git a/gaboshlib/g_median.sh b/gaboshlib/g_median.sh
index d61c7c7..72b27f6 100644
--- a/gaboshlib/g_median.sh
+++ b/gaboshlib/g_median.sh
@@ -11,18 +11,17 @@ function g_median {
   local g_num_elements=${#g_sorted_numbers[@]}
    
   # calculate the middle
-  local g_middle=$((g_num_elements/2))
+  local g_middle=$(($g_num_elements/2))
 
   local g_median
   # even/odd number 
-  if ((g_num_elements % 2 == 1))
+  if (($g_num_elements % 2 == 1))
   then
     # odd number
-    echo "g_middle=$g_middle"
-    g_median=${g_sorted_numbers[g_middle]}
+    g_median=${g_sorted_numbers[$g_middle]}
   else
     # even number
-    g_calc "(${g_sorted_numbers[g_middle - 1]} + ${g_sorted_numbers[g_middle]}) / 2"
+    g_calc "(${g_sorted_numbers[$g_middle - 1]} + ${g_sorted_numbers[$g_middle]}) / 2"
     g_median=$g_calc_result
   fi