diff --git a/vllm/v1/worker/gpu_model_runner.py b/vllm/v1/worker/gpu_model_runner.py
index bb44c5ad84cc1..9f3c34b15e2a8 100644
--- a/vllm/v1/worker/gpu_model_runner.py
+++ b/vllm/v1/worker/gpu_model_runner.py
@@ -3460,6 +3460,10 @@ class GPUModelRunner(
             scope="local",
         )
         prepare_communication_buffer_for_model(self.model)
+        if (drafter := getattr(self, "drafter", None)) and (
+            drafter_model := getattr(drafter, "model", None)
+        ):
+            prepare_communication_buffer_for_model(drafter_model)
         mm_config = self.model_config.multimodal_config
         self.is_multimodal_pruning_enabled = (
             supports_multimodal_pruning(self.get_model())