diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index e99adab..3167a87 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -36,6 +36,9 @@
 #include <sys/time.h>
 #include <sys/stat.h>
 #include <sys/mount.h>
+#include <sys/file.h>
+#include <sys/fsuid.h>
+#include <sys/personality.h>
 #include <sys/prctl.h>
 #include <sys/resource.h>
 #include <sys/mman.h>
@@ -581,11 +584,6 @@
           struct host_rlimit64 *, old_limit)
 #endif
 
-extern int personality(int);
-extern int flock(int, int);
-extern int setfsuid(int);
-extern int setfsgid(int);
-
 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */
 #ifdef TARGET_ARM
 static inline int regpairs_aligned(void *cpu_env) {