diff --git a/runtime/vk_crumbs.c b/runtime/vk_crumbs.c
index df73a53f..b522cf13 100644
--- a/runtime/vk_crumbs.c
+++ b/runtime/vk_crumbs.c
@@ -614,7 +614,7 @@ VkPassMark *vk_pass_mark_begin(VkCommandBuffer cb, int kind, uint64_t fence) {
     uint32_t id = ++seq;
     if (!id) id = ++seq;   // 0 means no mark
     VkPassMark *m = &ring[id & (VK_PASS_MARKS - 1)];
-    m->id = id, m->kind = (uint8_t)kind, m->fence = fence, m->draws = UINT32_MAX;
+    m->id = id, m->kind = (uint8_t)kind, m->fence = fence, m->draws = UINT32_MAX, m->mesh = m->mesh_ind = 0;
     m->gap = gap_now, gap_now = 0;   // what was recorded between the mark before and this one
     // timed unless the slot's previous mark is still waiting to be read (its queries are not reset yet)
     if (pt_pool) pt_timed[id & (VK_PASS_MARKS - 1)] = !pt_timed[id & (VK_PASS_MARKS - 1)] ? 1 : 2;
diff --git a/runtime/vk_exec.c b/runtime/vk_exec.c
index 99445f60..7112cc73 100644
--- a/runtime/vk_exec.c
+++ b/runtime/vk_exec.c
@@ -865,7 +865,6 @@ void vk_exec_pass_begin(VkExec *ex) {
     VkPassMark *m = ex->mark = rw_chunk ? NULL : vk_pass_mark_begin(ex->cb, VK_MARK_PASS, ex->fence);   // one ring
     if (m) {
         m->step = ex->mark_passes++;
-        m->mesh = m->mesh_ind = 0;
         m->w = ex->pass_w, m->h = ex->pass_h, m->d = ex->pass_layers;
         m->layer = ex->depth.image ? ex->depth.base_layer : 0;
         m->vw = m->vh = 0;