diff --git a/src/sagemaker/jumpstart/types.py b/src/sagemaker/jumpstart/types.py
index 3142596eba..f2d4221a3a 100644
--- a/src/sagemaker/jumpstart/types.py
+++ b/src/sagemaker/jumpstart/types.py
@@ -1397,7 +1397,7 @@ def __init__(
 
         self.model_id = model_id
         self.model_version = model_version
-        self.model_type = (model_type,)
+        self.model_type = model_type
         self.instance_type = instance_type
         self.instance_count = instance_count
         self.region = region