diff --git a/target/s390x/tcg/mem_helper.c b/target/s390x/tcg/mem_helper.c
index 0e12dae2aa..29ee5a8a07 100644
--- a/target/s390x/tcg/mem_helper.c
+++ b/target/s390x/tcg/mem_helper.c
@@ -146,7 +146,7 @@ static inline int s390_probe_access(CPUArchState *env, target_ulong addr,
                                     int mmu_idx, bool nonfault,
                                     void **phost, uintptr_t ra)
 {
-    int flags = probe_access_flags(env, addr, 0, access_type, mmu_idx,
+    int flags = probe_access_flags(env, addr, size, access_type, mmu_idx,
                                    nonfault, phost, ra);
 
     if (unlikely(flags & TLB_INVALID_MASK)) {