diff --git a/inference/modeling_sec.py b/inference/modeling_sec.py
index ff2cfb2..b0ef6ae 100644
--- a/inference/modeling_sec.py
+++ b/inference/modeling_sec.py
@@ -170,7 +170,7 @@ def __init__(self, config: SeCConfig, vision_model=None, language_model=None, us
         
         # Compatible with previous versions
         if config.grounding_encoder_config == "longsam2.1/longsam2.1_hiera_l.yaml":
-            grounding_encoder_config == "sec_sam2.1_hiera_l.yaml"
+            grounding_encoder_config = "sec_sam2.1_hiera_l.yaml"
         else:
             grounding_encoder_config = config.grounding_encoder_config