diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c
index 9092ffc39d..3d99d06fd7 100644
--- a/target-mips/op_helper.c
+++ b/target-mips/op_helper.c
@@ -237,16 +237,16 @@ void do_ddiv (void)
     }
 }
 
+#if TARGET_LONG_BITS > HOST_LONG_BITS
 void do_ddivu (void)
 {
     if (T1 != 0) {
-        /* XXX: lldivu? */
-        lldiv_t res = lldiv(T0, T1);
-        env->LO = (uint64_t)res.quot;
-        env->HI = (uint64_t)res.rem;
+        env->LO = T0 / T1;
+        env->HI = T0 % T1;
     }
 }
 #endif
+#endif /* TARGET_MIPS64 */
 
 #if defined(CONFIG_USER_ONLY) 
 void do_mfc0_random (void)