diff --git a/include/vid_vulkan.h b/include/vid_vulkan.h
index 8f2d03e19..f5569ed7f 100644
--- a/include/vid_vulkan.h
+++ b/include/vid_vulkan.h
@@ -61,7 +61,7 @@ typedef struct vulkan_ctx_s {
 
 	VkCommandPool cmdpool;
 	struct qfv_stagebuf_s *staging;
-	size_t      curFrame;
+	uint32_t    curFrame;
 	vulkan_frameset_t frames;
 	qfv_renderpassset_t renderPasses;
 	struct qfv_renderpass_s *output_renderpass;
diff --git a/libs/video/renderer/vulkan/vulkan_lighting.c b/libs/video/renderer/vulkan/vulkan_lighting.c
index 358a4b6c7..192faa38b 100644
--- a/libs/video/renderer/vulkan/vulkan_lighting.c
+++ b/libs/video/renderer/vulkan/vulkan_lighting.c
@@ -245,7 +245,7 @@ lighting_draw_maps (qfv_renderframe_t *rFrame)
 	QFV_AllocateCommandBuffers (device, lctx->cmdpool, 0, bufferset);
 	VkCommandBuffer cmd = bufferset->a[0];
 	QFV_duSetObjectName (device, VK_OBJECT_TYPE_COMMAND_BUFFER,
-						 cmd, va (ctx->va_ctx, "lighting:%zd", ctx->curFrame));
+						 cmd, va (ctx->va_ctx, "lighting:%d", ctx->curFrame));
 
 	VkCommandBufferBeginInfo beginInfo = {
 		.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,