diff --git a/libs/ardour/chan_count.cc b/libs/ardour/chan_count.cc
index c6764456e0..3cef0f6f90 100644
--- a/libs/ardour/chan_count.cc
+++ b/libs/ardour/chan_count.cc
@@ -18,7 +18,6 @@
     $Id: insert.cc 712 2006-07-28 01:08:57Z drobilla $
 */
 
-#define __STDC_LIMIT_MACROS 1
 #include <stdint.h>
 #include "ardour/chan_count.h"
 
diff --git a/libs/ardour/ladspa_plugin.cc b/libs/ardour/ladspa_plugin.cc
index cc532c61ca..027c16e78c 100644
--- a/libs/ardour/ladspa_plugin.cc
+++ b/libs/ardour/ladspa_plugin.cc
@@ -17,7 +17,6 @@
 
 */
 
-#define __STDC_FORMAT_MACROS 1
 #include <inttypes.h>
 
 #include <vector>