diff --git a/src/config_unix.h b/src/config_unix.h
index 70e6faecb..3b595145c 100644
--- a/src/config_unix.h
+++ b/src/config_unix.h
@@ -69,13 +69,6 @@
 #include <unistd.h>
 #include <sys/select.h>
 
-#ifndef WEXITSTATUS
-#define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
-#endif
-#ifndef WIFEXITED
-#define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
-#endif
-
 #include <inttypes.h>
 #include <stdint.h>