diff --git a/sqlmodel/main.py b/sqlmodel/main.py
index 661276b31d..f745b244a9 100644
--- a/sqlmodel/main.py
+++ b/sqlmodel/main.py
@@ -417,7 +417,7 @@ def get_column_from_field(field: ModelField) -> Column:
     nullable = not field.required
     index = getattr(field.field_info, "index", Undefined)
     if index is Undefined:
-        index = True
+        index = False
     if hasattr(field.field_info, "nullable"):
         field_nullable = getattr(field.field_info, "nullable")
         if field_nullable != Undefined: