diff --git a/libc/include/unistd.h b/libc/include/unistd.h
index cd09e3d..29154a2 100644
--- a/libc/include/unistd.h
+++ b/libc/include/unistd.h
@@ -61,16 +61,13 @@
 extern pid_t  getpgrp(void);
 extern int    setpgrp(void);
 extern pid_t  setsid(void);
-extern pid_t  getsid(pid_t);
 
 extern int execv(const char *, char * const *);
 extern int execvp(const char *, char * const *);
 extern int execve(const char *, char * const *, char * const *);
-extern int execvpe(const char *, char * const *, char * const *);
 extern int execl(const char *, const char *, ...);
 extern int execlp(const char *, const char *, ...);
 extern int execle(const char *, const char *, ...);
-extern int execlpe(const char *, const char *, ...);
 extern int capget(cap_user_header_t hdrp, cap_user_data_t datap);
 extern int capset(cap_user_header_t hdrp, const cap_user_data_t datap);
 extern int prctl(int  option,  unsigned long arg2, unsigned long arg3,
@@ -94,11 +91,8 @@
 extern int setresgid(gid_t, gid_t, gid_t);
 extern int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
 extern int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
-extern int getfsuid(uid_t);
-extern int setfsuid(uid_t);
 extern int issetugid(void);
 extern char* getlogin(void);
-extern int getlogin_r(char* name, size_t namesize);
 extern char* getusershell(void);
 extern void setusershell(void);
 extern void endusershell(void);
@@ -156,9 +150,6 @@
 extern int usleep(unsigned long);
 
 extern int gethostname(char *, size_t);
-extern int sethostname(const char *, size_t);
-extern int getdomainname(char *, size_t);
-extern int setdomainname(const char *, size_t);
 
 extern int getdtablesize(void);
 
@@ -195,6 +186,18 @@
 extern pid_t tcgetpgrp(int fd);
 extern int   tcsetpgrp(int fd, pid_t _pid);
 
+#if 0 /* MISSING FROM BIONIC */
+extern pid_t  getsid(pid_t);
+extern int execvpe(const char *, char * const *, char * const *);
+extern int execlpe(const char *, const char *, ...);
+extern int getfsuid(uid_t);
+extern int setfsuid(uid_t);
+extern int getlogin_r(char* name, size_t namesize);
+extern int sethostname(const char *, size_t);
+extern int getdomainname(char *, size_t);
+extern int setdomainname(const char *, size_t);
+#endif /* MISSING */
+
 /* Used to retry syscalls that can return EINTR. */
 #define TEMP_FAILURE_RETRY(exp) ({         \
     typeof (exp) _rc;                      \