diff --git a/app/Filters/InvoiceFilters.php b/app/Filters/InvoiceFilters.php
index c1b41dd4b7e2..bd03ca01d42a 100644
--- a/app/Filters/InvoiceFilters.php
+++ b/app/Filters/InvoiceFilters.php
@@ -329,7 +329,9 @@ class InvoiceFilters extends QueryFilters
 
         if($sort_col[0] == 'number') {
             // return $this->builder->orderByRaw('CAST(number AS UNSIGNED), number ' . $dir);
-            return $this->builder->orderByRaw('ABS(number) ' . $dir);
+            // return $this->builder->orderByRaw("number REGEXP '^[A-Za-z]+$',CAST(number as SIGNED INTEGER),CAST(REPLACE(number,'-','')AS SIGNED INTEGER) ,number");
+            // return $this->builder->orderByRaw('ABS(number) ' . $dir);
+               return $this->builder->orderByRaw("REGEXP_REPLACE(number,'[^0-9]+','')+0 " . $dir);
         }
 
         return $this->builder->orderBy($sort_col[0], $dir);