diff --git a/src/nouveau/vulkan/nvk_descriptor_table.c b/src/nouveau/vulkan/nvk_descriptor_table.c
index 21ba49b6358..1391cbb2bed 100644
--- a/src/nouveau/vulkan/nvk_descriptor_table.c
+++ b/src/nouveau/vulkan/nvk_descriptor_table.c
@@ -104,6 +104,8 @@ nvk_descriptor_table_free(struct nvk_device *device,
 {
    simple_mtx_lock(&table->mutex);
    assert(table->free_count < table->alloc);
+   for (uint32_t i = 0; i < table->free_count; i++)
+      assert(table->free_table[i] != index);
    table->free_table[table->free_count++] = index;
    simple_mtx_unlock(&table->mutex);
 }