diff --git a/tools/project_manager/projectmgr.php b/tools/project_manager/projectmgr.php
index 611316647a..f2de08ae39 100644
--- a/tools/project_manager/projectmgr.php
+++ b/tools/project_manager/projectmgr.php
@@ -117,11 +117,7 @@ function get_sql_contribution()
                         if ( in_array( '', $values ) ) return NULL;
                     }
 
-                    function escape_callback($value)
-                    {
-                        return mysqli_real_escape_string(DPDatabase::get_connection(), $value);
-                    }
-                    $values = array_map("escape_callback", $values);
+                    $values = array_map("escape_value", $values);
 
                     if ( $comparator == '=' )
                     {
@@ -1006,5 +1002,10 @@ function list_uber_projects( $can_see_all )
     }
 }
 
+function escape_value($value)
+{
+    return mysqli_real_escape_string(DPDatabase::get_connection(), $value);
+}
+
 // vim: sw=4 ts=4 expandtab
 ?>