diff --git a/src/render/direct3d/SDL_render_d3d.c b/src/render/direct3d/SDL_render_d3d.c
index 75ca3b45a..e995a38f6 100644
--- a/src/render/direct3d/SDL_render_d3d.c
+++ b/src/render/direct3d/SDL_render_d3d.c
@@ -1108,7 +1108,7 @@ static int D3D_RunCommandQueue(SDL_Renderer *renderer, SDL_RenderCommand *cmd, v
         return -1;
     }
 
-    if (vertices) {
+    if (vertsize > 0) {
         /* upload the new VBO data for this set of commands. */
         vbo = data->vertexBuffers[vboidx];
         if (data->vertexBufferSize[vboidx] < vertsize) {