diff --git a/vllm/platforms/rocm.py b/vllm/platforms/rocm.py
index 25601011491f..95d3fa74e325 100644
--- a/vllm/platforms/rocm.py
+++ b/vllm/platforms/rocm.py
@@ -276,6 +276,9 @@ class RocmPlatform(Platform):
             )
 
         if envs.VLLM_USE_V1:
+            if selected_backend == _Backend.FLEX_ATTENTION:
+                logger.info("Using FlexAttention backend on V1 engine.")
+                return "vllm.v1.attention.backends.flex_attention.FlexAttentionBackend"
             if (
                 envs.VLLM_ROCM_USE_AITER and envs.VLLM_ROCM_USE_AITER_MHA and on_gfx9()
             ) or selected_backend == _Backend.ROCM_AITER_FA: