diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 0e506cc..5b88e62 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -3040,6 +3040,7 @@
     host_ts->tv_sec = tswapl(target_ts->tv_sec);
     host_ts->tv_nsec = tswapl(target_ts->tv_nsec);
     unlock_user_struct(target_ts, target_addr, 0);
+    return 0;
 }
 
 static inline abi_long host_to_target_timespec(abi_ulong target_addr,
@@ -3052,6 +3053,7 @@
     target_ts->tv_sec = tswapl(host_ts->tv_sec);
     target_ts->tv_nsec = tswapl(host_ts->tv_nsec);
     unlock_user_struct(target_ts, target_addr, 1);
+    return 0;
 }
 
 int get_osversion(void)