diff --git a/qemu/target/arm/translate-a64.c b/qemu/target/arm/translate-a64.c
index 3980be5d..78a4daf6 100644
--- a/qemu/target/arm/translate-a64.c
+++ b/qemu/target/arm/translate-a64.c
@@ -3508,7 +3508,7 @@ static void disas_ldst_atomic(DisasContext *s, uint32_t insn,
     bool r = extract32(insn, 22, 1);
     bool a = extract32(insn, 23, 1);
     TCGv_i64 tcg_rs, clean_addr;
-    AtomicThreeOpFn *fn;
+    AtomicThreeOpFn *fn = NULL;
 
     if (is_vector || !dc_isar_feature(aa64_atomics, s)) {
         unallocated_encoding(s);