diff --git a/src/engine/client/graphics_threaded.cpp b/src/engine/client/graphics_threaded.cpp
index 617c4604907..3913f119c7e 100644
--- a/src/engine/client/graphics_threaded.cpp
+++ b/src/engine/client/graphics_threaded.cpp
@@ -1918,6 +1918,9 @@ int CGraphics_Threaded::CreateBufferObject(size_t UploadDataSize, void *pUploadD
 		m_vBufferObjectIndices[Index] = Index;
 	}
 
+	dbg_assert((CreateFlags & EBufferObjectCreateFlags::BUFFER_OBJECT_CREATE_FLAGS_ONE_TIME_USE_BIT) == 0 || (UploadDataSize <= CCommandBuffer::MAX_VERTICES * maximum(sizeof(CCommandBuffer::SVertexTex3DStream), sizeof(CCommandBuffer::SVertexTex3D))),
+		"If BUFFER_OBJECT_CREATE_FLAGS_ONE_TIME_USE_BIT is used, then the buffer size must not exceed max(sizeof(CCommandBuffer::SVertexTex3DStream), sizeof(CCommandBuffer::SVertexTex3D)) * CCommandBuffer::MAX_VERTICES");
+
 	CCommandBuffer::SCommand_CreateBufferObject Cmd;
 	Cmd.m_BufferIndex = Index;
 	Cmd.m_DataSize = UploadDataSize;
@@ -1971,6 +1974,9 @@ void CGraphics_Threaded::RecreateBufferObject(int BufferIndex, size_t UploadData
 	Cmd.m_DeletePointer = IsMovedPointer;
 	Cmd.m_Flags = CreateFlags;
 
+	dbg_assert((CreateFlags & EBufferObjectCreateFlags::BUFFER_OBJECT_CREATE_FLAGS_ONE_TIME_USE_BIT) == 0 || (UploadDataSize <= CCommandBuffer::MAX_VERTICES * maximum(sizeof(CCommandBuffer::SVertexTex3DStream), sizeof(CCommandBuffer::SVertexTex3D))),
+		"If BUFFER_OBJECT_CREATE_FLAGS_ONE_TIME_USE_BIT is used, then the buffer size must not exceed max(sizeof(CCommandBuffer::SVertexTex3DStream), sizeof(CCommandBuffer::SVertexTex3D)) * CCommandBuffer::MAX_VERTICES");
+
 	if(IsMovedPointer)
 	{
 		Cmd.m_pUploadData = pUploadData;