diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 6fef818..3160a9b 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -7592,7 +7592,9 @@
     case FUTEX_WAIT_BITSET:
         if (timeout) {
             pts = &ts;
-            target_to_host_timespec64(pts, timeout);
+            if (target_to_host_timespec64(pts, timeout)) {
+                return -TARGET_EFAULT;
+            }
         } else {
             pts = NULL;
         }