diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index e89b815..fd5c4f1 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -2987,7 +2987,7 @@
 #endif
          protocol == NETLINK_KOBJECT_UEVENT ||
          protocol == NETLINK_AUDIT)) {
-        return -EPFNOSUPPORT;
+        return -TARGET_EPFNOSUPPORT;
     }
 
     if (domain == AF_PACKET ||
@@ -5856,7 +5856,7 @@
 
 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
 {
-    return -ENOSYS;
+    return -TARGET_ENOSYS;
 }
 #else
 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)