diff --git a/target-s390x/helper.h b/target-s390x/helper.h
index 9ff0c36aa5..9bcf4d6b85 100644
--- a/target-s390x/helper.h
+++ b/target-s390x/helper.h
@@ -98,7 +98,7 @@ DEF_HELPER_4(stctg, void, env, i32, i64, i32)
 DEF_HELPER_FLAGS_2(tprot, TCG_CALL_NO_RWG, i32, i64, i64)
 DEF_HELPER_FLAGS_2(iske, TCG_CALL_NO_RWG_SE, i64, env, i64)
 DEF_HELPER_FLAGS_3(sske, TCG_CALL_NO_RWG, void, env, i64, i64)
-DEF_HELPER_FLAGS_3(rrbe, TCG_CALL_NO_RWG, i32, env, i32, i64)
+DEF_HELPER_FLAGS_2(rrbe, TCG_CALL_NO_RWG, i32, env, i64)
 DEF_HELPER_3(csp, i32, env, i32, i32)
 DEF_HELPER_4(mvcs, i32, env, i64, i64, i64)
 DEF_HELPER_4(mvcp, i32, env, i64, i64, i64)
diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def
index f554c1b567..2a045727ae 100644
--- a/target-s390x/insn-data.def
+++ b/target-s390x/insn-data.def
@@ -635,6 +635,8 @@
     C(0xdb00, MVCS,    SS_d,  Z,   la1, a2, 0, 0, mvcs, 0)
 /* PURGE TLB */
     C(0xb20d, PTLB,    S,     Z,   0, 0, 0, 0, ptlb, 0)
+/* RESET REFERENCE BIT EXTENDED */
+    C(0xb22a, RRBE,    RRE,   Z,   0, r2_o, 0, 0, rrbe, 0)
 /* SET ADDRESSING MODE */
     /* We only do 64-bit, so accept this as a no-op.
        Let SAM24 and SAM31 signal illegal instruction.  */
diff --git a/target-s390x/mem_helper.c b/target-s390x/mem_helper.c
index 099724174a..406ec9b69d 100644
--- a/target-s390x/mem_helper.c
+++ b/target-s390x/mem_helper.c
@@ -958,7 +958,7 @@ void HELPER(sske)(CPUS390XState *env, uint64_t r1, uint64_t r2)
 }
 
 /* reset reference bit extended */
-uint32_t HELPER(rrbe)(CPUS390XState *env, uint32_t r1, uint64_t r2)
+uint32_t HELPER(rrbe)(CPUS390XState *env, uint64_t r2)
 {
     uint8_t re;
     uint8_t key;
diff --git a/target-s390x/translate.c b/target-s390x/translate.c
index 2b07a8ecf6..d7d991c58a 100644
--- a/target-s390x/translate.c
+++ b/target-s390x/translate.c
@@ -1033,18 +1033,6 @@ static void disas_b2(CPUS390XState *env, DisasContext *s, int op,
     LOG_DISAS("disas_b2: op 0x%x r1 %d r2 %d\n", op, r1, r2);
 
     switch (op) {
-    case 0x2a: /* RRBE     R1,R2      [RRE] */
-        /* Set Storage Key Extended */
-        check_privileged(s);
-        r1 = (insn >> 4) & 0xf;
-        r2 = insn & 0xf;
-        tmp32_1 = load_reg32(r1);
-        tmp = load_reg(r2);
-        gen_helper_rrbe(cc_op, cpu_env, tmp32_1, tmp);
-        set_cc_static(s);
-        tcg_temp_free_i32(tmp32_1);
-        tcg_temp_free_i64(tmp);
-        break;
     case 0x34: /* STCH ? */
         /* Store Subchannel */
         check_privileged(s);
@@ -2716,6 +2704,16 @@ static ExitStatus op_rll64(DisasContext *s, DisasOps *o)
     return NO_EXIT;
 }
 
+#ifndef CONFIG_USER_ONLY
+static ExitStatus op_rrbe(DisasContext *s, DisasOps *o)
+{
+    check_privileged(s);
+    gen_helper_rrbe(cc_op, cpu_env, o->in2);
+    set_cc_static(s);
+    return NO_EXIT;
+}
+#endif
+
 static ExitStatus op_sar(DisasContext *s, DisasOps *o)
 {
     int r1 = get_field(s->fields, r1);