diff --git a/src/ipc/shmctl.c b/src/ipc/shmctl.c
index e2879f2..3659807 100644
--- a/src/ipc/shmctl.c
+++ b/src/ipc/shmctl.c
@@ -4,9 +4,24 @@
 
 int shmctl(int id, int cmd, struct shmid_ds *buf)
 {
+#ifdef SYSCALL_IPC_BROKEN_MODE
+	struct shmid_ds tmp;
+	if (cmd == IPC_SET) {
+		tmp = *buf;
+		tmp.shm_perm.mode *= 0x10000U;
+		buf = &tmp;
+	}
+#endif
 #ifdef SYS_shmctl
-	return syscall(SYS_shmctl, id, cmd | IPC_64, buf);
+	int r = __syscall(SYS_shmctl, id, cmd | IPC_64, buf);
 #else
-	return syscall(SYS_ipc, IPCOP_shmctl, id, cmd | IPC_64, 0, buf, 0);
+	int r = __syscall(SYS_ipc, IPCOP_shmctl, id, cmd | IPC_64, 0, buf, 0);
+#endif
+#ifdef SYSCALL_IPC_BROKEN_MODE
+	if (r < 0) return __syscall_ret(r);
+	if (cmd == IPC_STAT) {
+		buf->shm_perm.mode >>= 16;
+	}
+	return r;
 #endif
 }