diff --git a/testsuite/objects/__init__.py b/testsuite/objects/__init__.py
index 063e5f687..9fad13efe 100644
--- a/testsuite/objects/__init__.py
+++ b/testsuite/objects/__init__.py
@@ -78,11 +78,24 @@ class Credentials:
 
     def asdict(self):
         """Custom asdict because of needing to put location as parent dict key for inner dict"""
-        if self.in_location == "authorizationHeader":
-            return {self.in_location: {"prefix": self.keySelector}}
+        assert (
+            self.in_location != "authorizationHeader"
+        ), "For 'authorizationHeader' please use CredentialsAuthHeader dataclass."
         return {self.in_location: {"name": self.keySelector}}
 
 
+@dataclass
+class CredentialsAuthHeader(Credentials):
+    """Dataclass for Credentials of type Authorization Header."""
+
+    def __post_init__(self):
+        assert self.in_location == "authorizationHeader"
+
+    def asdict(self):
+        """Custom asdict because of needing to put location as parent dict key for inner dict"""
+        return {self.in_location: {"prefix": self.keySelector}}
+
+
 @dataclass
 class Rule:
     """