diff --git a/libervia/backend/core/patches.py b/libervia/backend/core/patches.py
index e6c1bbbd..db8494a8 100644
--- a/libervia/backend/core/patches.py
+++ b/libervia/backend/core/patches.py
@@ -88,7 +88,9 @@ class ScramSha:
         @param challenge: Challenge string from the server.
         @return: Client proof.
         """
-        challenge_parts = dict(item.split("=") for item in challenge.decode().split(","))
+        challenge_parts = dict(
+            item.split("=", 1) for item in challenge.decode().split(",")
+        )
         self.server_nonce = challenge_parts["r"]
         salt = base64.b64decode(challenge_parts["s"])
         iterations = int(challenge_parts["i"])