diff --git a/backends/trtllm/src/looper.rs b/backends/trtllm/src/looper.rs
index 969046d184b..e745e2eee24 100644
--- a/backends/trtllm/src/looper.rs
+++ b/backends/trtllm/src/looper.rs
@@ -301,6 +301,7 @@ impl TensorRtLlmBackendV2 {
             1 => match request.inputs.first().expect("Single item-chunk") {
                 Chunk::Text(_) => Ok(()),
                 Chunk::Image(_) => Err(ValidationError(UnsupportedModality("image"))),
+                Chunk::Video(_) => Err(ValidationError(UnsupportedModality("video"))),
             },
         }
     }