diff --git a/dsv4/layers/shared_expert.py b/dsv4/layers/shared_expert.py
index 930b5674..26472412 100644
--- a/dsv4/layers/shared_expert.py
+++ b/dsv4/layers/shared_expert.py
@@ -316,6 +316,8 @@ class Nvfp4SharedExpert:
         self._ensure_initialized()
 
         l1_out = self._run_l1(hidden_states)
+        if l1_out.shape[1] < 2 * self.intermediate_size:
+            print(f"  WARNING: l1_out shape {l1_out.shape} < expected (N, {2*self.intermediate_size})", flush=True)
 
         gate = l1_out[:, :self.intermediate_size]
         up = l1_out[:, self.intermediate_size:]