diff --git a/src/nouveau/compiler/nak.rs b/src/nouveau/compiler/nak.rs
index facca435bea..d03dd5e4207 100644
--- a/src/nouveau/compiler/nak.rs
+++ b/src/nouveau/compiler/nak.rs
@@ -133,7 +133,8 @@ fn nir_options(_dev: &nv_device_info) -> nir_shader_compiler_options {
         | nir_lower_iadd64
         | nir_lower_ineg64
         | nir_lower_shift64
-        | nir_lower_imul_2x32_64);
+        | nir_lower_imul_2x32_64
+        | nir_lower_conv64);
     op.lower_ldexp = true;
     op.lower_fmod = true;
     op.lower_ffract = true;