diff --git a/src/compiler/spirv/spirv_to_nir.c b/src/compiler/spirv/spirv_to_nir.c
index a91cfb1cc2b..55932858064 100644
--- a/src/compiler/spirv/spirv_to_nir.c
+++ b/src/compiler/spirv/spirv_to_nir.c
@@ -2256,6 +2256,7 @@ vtn_null_constant(struct vtn_builder *b, struct vtn_type *type)
    switch (type->base_type) {
    case vtn_base_type_scalar:
    case vtn_base_type_vector:
+   case vtn_base_type_cooperative_matrix:
       c->is_null_constant = true;
       /* Nothing to do here.  It's already initialized to zero */
       break;