diff --git a/target/arm/helper-a64.c b/target/arm/helper-a64.c
index d0e435ca4b2bedce9136566c12809ca07f7d0978..96a3ecf70789778596192a4aa88c84e18e33f9f3 100644
--- a/target/arm/helper-a64.c
+++ b/target/arm/helper-a64.c
@@ -456,6 +456,8 @@ static uint64_t do_paired_cmpxchg64_le(CPUARMState *env, uint64_t addr,
 #ifdef CONFIG_USER_ONLY
         /* ??? Enforce alignment.  */
         uint64_t *haddr = g2h(addr);
+
+        helper_retaddr = ra;
         o0 = ldq_le_p(haddr + 0);
         o1 = ldq_le_p(haddr + 1);
         oldv = int128_make128(o0, o1);
@@ -465,6 +467,7 @@ static uint64_t do_paired_cmpxchg64_le(CPUARMState *env, uint64_t addr,
             stq_le_p(haddr + 0, int128_getlo(newv));
             stq_le_p(haddr + 1, int128_gethi(newv));
         }
+        helper_retaddr = 0;
 #else
         int mem_idx = cpu_mmu_index(env, false);
         TCGMemOpIdx oi0 = make_memop_idx(MO_LEQ | MO_ALIGN_16, mem_idx);
@@ -523,6 +526,8 @@ static uint64_t do_paired_cmpxchg64_be(CPUARMState *env, uint64_t addr,
 #ifdef CONFIG_USER_ONLY
         /* ??? Enforce alignment.  */
         uint64_t *haddr = g2h(addr);
+
+        helper_retaddr = ra;
         o1 = ldq_be_p(haddr + 0);
         o0 = ldq_be_p(haddr + 1);
         oldv = int128_make128(o0, o1);
@@ -532,6 +537,7 @@ static uint64_t do_paired_cmpxchg64_be(CPUARMState *env, uint64_t addr,
             stq_be_p(haddr + 0, int128_gethi(newv));
             stq_be_p(haddr + 1, int128_getlo(newv));
         }
+        helper_retaddr = 0;
 #else
         int mem_idx = cpu_mmu_index(env, false);
         TCGMemOpIdx oi0 = make_memop_idx(MO_BEQ | MO_ALIGN_16, mem_idx);