diff --git a/include/pcp/ed.h b/include/pcp/ed.h
index e3d8fce..316078e 100644
--- a/include/pcp/ed.h
+++ b/include/pcp/ed.h
@@ -32,28 +32,6 @@
 #include <sodium.h>
 #include <string.h>
 #include <stdio.h>
-
-#if defined __linux__ || defined __GNU__ || defined __GLIBC__
-#  ifndef _DEFAULT_SOURCE
-#    define _DEFAULT_SOURCE 1
-#  endif
-#
-#  ifndef _XOPEN_SOURCE
-#    define _XOPEN_SOURCE 1
-#  endif
-#
-#  ifndef _GNU_SOURCE
-#    define _GNU_SOURCE 1
-#  endif
-#
-#  ifndef __USE_XOPEN
-#    define __USE_XOPEN 1
-#  endif
-#
-#else
-#  define _BSD_SOURCE 1
-#endif
-
 #include <time.h>
 
 #include "defines.h"
diff --git a/include/pcp/key.h b/include/pcp/key.h
index f4be2df..6f9e84d 100644
--- a/include/pcp/key.h
+++ b/include/pcp/key.h
@@ -26,28 +26,6 @@
 #include <sodium.h>
 #include <string.h>
 #include <stdio.h>
-
-#if defined __linux__ || defined __GNU__ || defined __GLIBC__
-#  ifndef _DEFAULT_SOURCE
-#    define _DEFAULT_SOURCE 1
-#  endif
-#
-#  ifndef _XOPEN_SOURCE
-#    define _XOPEN_SOURCE 1
-#  endif
-#
-#  ifndef _GNU_SOURCE
-#    define _GNU_SOURCE 1
-#  endif
-#
-#  ifndef __USE_XOPEN
-#    define __USE_XOPEN 1
-#  endif
-#
-#else
-#  define _BSD_SOURCE 1
-#endif
-
 #include <time.h>
 
 #include <math.h>