diff --git a/src/nouveau/vulkan/nvk_physical_device.c b/src/nouveau/vulkan/nvk_physical_device.c
index b8f9fbec99e..aa8e746cb96 100644
--- a/src/nouveau/vulkan/nvk_physical_device.c
+++ b/src/nouveau/vulkan/nvk_physical_device.c
@@ -488,7 +488,7 @@ nvk_get_device_features(const struct nv_device_info *info,
 uint32_t
 nvk_min_cbuf_alignment(const struct nv_device_info *info)
 {
-   return 256;
+   return info->cls_eng3d >= TURING_A ? 64 : 256;
 }
 
 static void