diff --git a/libs/xmlrpc-c/lib/libutil/asprintf.c b/libs/xmlrpc-c/lib/libutil/asprintf.c
index 19c9632ebb..9e5a614993 100644
--- a/libs/xmlrpc-c/lib/libutil/asprintf.c
+++ b/libs/xmlrpc-c/lib/libutil/asprintf.c
@@ -1,4 +1,4 @@
-#define _GNU_SOURCE
+//#define _GNU_SOURCE
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/libs/xmlrpc-c/lib/libutil/make_printable.c b/libs/xmlrpc-c/lib/libutil/make_printable.c
index 141bd30cb4..fc94f78e4f 100644
--- a/libs/xmlrpc-c/lib/libutil/make_printable.c
+++ b/libs/xmlrpc-c/lib/libutil/make_printable.c
@@ -1,4 +1,4 @@
-#define _GNU_SOURCE
+//#define _GNU_SOURCE
 
 #include <stdarg.h>
 #include <string.h>
diff --git a/libs/xmlrpc-c/lib/util/casprintf.c b/libs/xmlrpc-c/lib/util/casprintf.c
index 85432817f5..959e4ce495 100644
--- a/libs/xmlrpc-c/lib/util/casprintf.c
+++ b/libs/xmlrpc-c/lib/util/casprintf.c
@@ -1,4 +1,4 @@
-#define _GNU_SOURCE
+//#define _GNU_SOURCE
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/libs/xmlrpc-c/lib/util/stripcaseeq.c b/libs/xmlrpc-c/lib/util/stripcaseeq.c
index 324a1d8895..348a868fc5 100644
--- a/libs/xmlrpc-c/lib/util/stripcaseeq.c
+++ b/libs/xmlrpc-c/lib/util/stripcaseeq.c
@@ -1,4 +1,4 @@
-#define _GNU_SOURCE
+//#define _GNU_SOURCE
 #include <ctype.h>
 
 #include "bool.h"
diff --git a/libs/xmlrpc-c/tools/lib/dumpvalue.c b/libs/xmlrpc-c/tools/lib/dumpvalue.c
index 77265a570c..ebcc000e13 100644
--- a/libs/xmlrpc-c/tools/lib/dumpvalue.c
+++ b/libs/xmlrpc-c/tools/lib/dumpvalue.c
@@ -5,7 +5,7 @@
    used for debugging purposes in other places.
 */
 
-#define _GNU_SOURCE
+//#define _GNU_SOURCE
 
 #include <stdlib.h>
 #include <stdio.h>
diff --git a/libs/xmlrpc-c/tools/xmlrpc/xmlrpc.c b/libs/xmlrpc-c/tools/xmlrpc/xmlrpc.c
index 1bdc44c13d..c768b7bdf1 100644
--- a/libs/xmlrpc-c/tools/xmlrpc/xmlrpc.c
+++ b/libs/xmlrpc-c/tools/xmlrpc/xmlrpc.c
@@ -35,7 +35,7 @@
 
 */
 
-#define _GNU_SOURCE
+//#define _GNU_SOURCE
 
 #include <stdlib.h>
 #include <stdio.h>