diff --git a/src/virtio/vulkan/vn_pipeline.c b/src/virtio/vulkan/vn_pipeline.c
index 5fbab8a4a2b..bf9c9d32238 100644
--- a/src/virtio/vulkan/vn_pipeline.c
+++ b/src/virtio/vulkan/vn_pipeline.c
@@ -140,9 +140,12 @@ vn_CreatePipelineCache(VkDevice device,
 
    VkPipelineCacheCreateInfo local_create_info;
    if (pCreateInfo->initialDataSize) {
+      const struct vk_pipeline_cache_header *header =
+         pCreateInfo->pInitialData;
+
       local_create_info = *pCreateInfo;
-      local_create_info.pInitialData +=
-         sizeof(struct vk_pipeline_cache_header);
+      local_create_info.initialDataSize -= header->header_size;
+      local_create_info.pInitialData += header->header_size;
       pCreateInfo = &local_create_info;
    }