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-rw-r--r--lib/libsystem.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/lib/libsystem.c b/lib/libsystem.c
index 57073dce..bf2416a4 100644
--- a/lib/libsystem.c
+++ b/lib/libsystem.c
@@ -18,7 +18,6 @@
    Contributed to the public domain.
 =============================================================================*/
 #define _DEFAULT_SOURCE /* New name for SVID & BSD source defines */
-#define _XOPEN_SOURCE
 #define _BSD_SOURCE  /* Make SIGWINCH defined on OpenBSD */
 
 #include <stdarg.h>