diff --git a/src/eko/io/runcards.py b/src/eko/io/runcards.py
index 1fecfbc9b..450b51838 100644
--- a/src/eko/io/runcards.py
+++ b/src/eko/io/runcards.py
@@ -54,7 +54,7 @@ class TheoryCard(DictLike):
     def __post_init__(self):
         """Enforce defaults."""
         if self.matching_order is None:
-            self.matching_order = self.order
+            self.matching_order = (self.order[0] - 1, 0)
 
 
 @dataclass