diff --git a/invokeai/backend/model_management/convert_ckpt_to_diffusers.py b/invokeai/backend/model_management/convert_ckpt_to_diffusers.py
index b371fc96e8..4a95d1d980 100644
--- a/invokeai/backend/model_management/convert_ckpt_to_diffusers.py
+++ b/invokeai/backend/model_management/convert_ckpt_to_diffusers.py
@@ -422,7 +422,7 @@ def convert_ldm_unet_checkpoint(
             )
             for key in keys:
                 if key.startswith("model.diffusion_model"):
-                    flat_ema_key = "model_ema." + "".join(key.split(".")[2:])
+                    flat_ema_key = "model_ema." + "".join(key.split(".")[1:])
                     unet_state_dict[key.replace(unet_key, "")] = checkpoint.pop(flat_ema_key)
         else:
             if sum(k.startswith("model_ema") for k in keys) > 100: