diff --git a/src/compiler/nir/nir_sweep.c b/src/compiler/nir/nir_sweep.c
index 5c62154ec7f..b22f0f56569 100644
--- a/src/compiler/nir/nir_sweep.c
+++ b/src/compiler/nir/nir_sweep.c
@@ -119,6 +119,8 @@ sweep_impl(nir_shader *nir, nir_function_impl *impl)
    ralloc_steal(nir, impl);
 
    ralloc_steal(nir, impl->params);
+   for (unsigned i = 0; i < impl->num_params; i++)
+      ralloc_steal(nir, impl->params[i]);
    ralloc_steal(nir, impl->return_var);
    steal_list(nir, nir_variable, &impl->locals);
    steal_list(nir, nir_register, &impl->registers);