diff --git a/target/arm/tcg/meson.build b/target/arm/tcg/meson.build
index bdcab56489..6fca38f2cc 100644
--- a/target/arm/tcg/meson.build
+++ b/target/arm/tcg/meson.build
@@ -1,7 +1,11 @@
-gen = [
+gen_a64 = [
+  decodetree.process('a64.decode', extra_args: ['--static-decode=disas_a64']),
   decodetree.process('sve.decode', extra_args: '--decode=disas_sve'),
   decodetree.process('sme.decode', extra_args: '--decode=disas_sme'),
   decodetree.process('sme-fa64.decode', extra_args: '--static-decode=disas_sme_fa64'),
+]
+
+gen_a32 = [
   decodetree.process('neon-shared.decode', extra_args: '--decode=disas_neon_shared'),
   decodetree.process('neon-dp.decode', extra_args: '--decode=disas_neon_dp'),
   decodetree.process('neon-ls.decode', extra_args: '--decode=disas_neon_ls'),
@@ -13,10 +17,10 @@ gen = [
   decodetree.process('a32-uncond.decode', extra_args: '--static-decode=disas_a32_uncond'),
   decodetree.process('t32.decode', extra_args: '--static-decode=disas_t32'),
   decodetree.process('t16.decode', extra_args: ['-w', '16', '--static-decode=disas_t16']),
-  decodetree.process('a64.decode', extra_args: ['--static-decode=disas_a64']),
 ]
 
-arm_ss.add(gen)
+arm_ss.add(gen_a32)
+arm_ss.add(when: 'TARGET_AARCH64', if_true: gen_a64)
 
 arm_ss.add(files(
   'cpu32.c',