diff --git a/src/asahi/compiler/agx_compile.c b/src/asahi/compiler/agx_compile.c
index 421379cfadc..d69ca2df941 100644
--- a/src/asahi/compiler/agx_compile.c
+++ b/src/asahi/compiler/agx_compile.c
@@ -2919,7 +2919,7 @@ agx_preprocess_nir(nir_shader *nir, const nir_shader *libagx,
    NIR_PASS_V(nir, nir_lower_var_copies);
    NIR_PASS_V(nir, nir_lower_vars_to_ssa);
    NIR_PASS_V(nir, nir_lower_io, nir_var_shader_in | nir_var_shader_out,
-              glsl_type_size, 0);
+              glsl_type_size, nir_lower_io_lower_64bit_to_32);
    NIR_PASS_V(nir, nir_lower_ssbo);
    if (nir->info.stage == MESA_SHADER_FRAGMENT) {
       struct interp_masks masks = agx_interp_masks(nir);