diff --git a/gaboshlib/g_median.sh b/gaboshlib/g_median.sh
index 85492bc..48a6684 100644
--- a/gaboshlib/g_median.sh
+++ b/gaboshlib/g_median.sh
@@ -11,15 +11,15 @@ function g_median {
   local g_num_elements=${#g_sorted_numbers[@]}
    
   # calculate the middle
-  local g_middle=$((num_elements/2))
+  local g_middle=$((g_num_elements/2))
 
   local g_median
   # Falls die Anzahl der Elemente ungerade ist
   if ((g_num_elements % 2 == 1)); then
-    g_median=${sorted_numbers[middle]}
+    g_median=${g_sorted_numbers[g_middle]}
   else
     # Falls die Anzahl der Elemente gerade ist
-    g_calc "(${sorted_numbers[middle - 1]} + ${sorted_numbers[middle]}) / 2"
+    g_calc "(${g_sorted_numbers[g_middle - 1]} + ${g_sorted_numbers[g_middle]}) / 2"
     g_median=$g_calc_result
   fi