diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e25f025eebe..0f4e3a949e1 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-16  Bernhard Heckel  <bernhard.heckel@intel.com>
+
+	* darwin-nat-info.c (info_mach_region_command): Use expression_up.
+
 2016-12-12  Yao Qi  <yao.qi@linaro.org>
 
 	PR tdep/20955
diff --git a/gdb/darwin-nat-info.c b/gdb/darwin-nat-info.c
index 314d265f7e3..0262026e331 100644
--- a/gdb/darwin-nat-info.c
+++ b/gdb/darwin-nat-info.c
@@ -725,13 +725,12 @@ info_mach_regions_recurse_command (char *args, int from_tty)
 static void
 info_mach_region_command (char *exp, int from_tty)
 {
-  struct expression *expr;
   struct value *val;
   mach_vm_address_t address;
   struct inferior *inf;
 
-  expr = parse_expression (exp);
-  val = evaluate_expression (expr);
+  expression_up expr = parse_expression (exp);
+  val = evaluate_expression (expr.get ());
   if (TYPE_CODE (value_type (val)) == TYPE_CODE_REF)
     {
       val = value_ind (val);