diff --git a/src/microsoft/compiler/nir_to_dxil.c b/src/microsoft/compiler/nir_to_dxil.c
index d120d5fcdd9..37398c0c4d8 100644
--- a/src/microsoft/compiler/nir_to_dxil.c
+++ b/src/microsoft/compiler/nir_to_dxil.c
@@ -4083,6 +4083,7 @@ optimize_nir(struct nir_shader *s, const struct nir_to_dxil_options *opts)
       NIR_PASS(progress, s, nir_lower_indirect_derefs, nir_var_function_temp, UINT32_MAX);
       NIR_PASS(progress, s, nir_lower_alu_to_scalar, NULL, NULL);
       NIR_PASS(progress, s, nir_copy_prop);
+      NIR_PASS(progress, s, nir_opt_copy_prop_vars);
       NIR_PASS(progress, s, nir_lower_bit_size, lower_bit_size_callback, (void*)opts);
       NIR_PASS(progress, s, dxil_nir_lower_8bit_conv);
       if (opts->lower_int16)