diff --git a/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas-escaped.json b/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas-escaped.json
index b5fcfd2c07..b70e19949b 100644
--- a/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas-escaped.json
+++ b/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas-escaped.json
@@ -14,6 +14,6 @@
     "ssl": true
   },
   "parsed_options": {
-    "defaultDatabase": "some,db"
+    "auth_database": "some,db"
   }
 }
diff --git a/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas-escaped.yml b/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas-escaped.yml
index c0719f0862..c8ac48c35b 100644
--- a/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas-escaped.yml
+++ b/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas-escaped.yml
@@ -10,4 +10,4 @@ options:
   replicaSet: repl0
   ssl: true
 parsed_options:
-  defaultDatabase: some,db
+  auth_database: some,db
diff --git a/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas.json b/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas.json
index c1e85f4b99..950409e20c 100644
--- a/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas.json
+++ b/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas.json
@@ -14,6 +14,6 @@
     "ssl": true
   },
   "parsed_options": {
-    "defaultDatabase": "some,db"
+    "auth_database": "some,db"
   }
 }
diff --git a/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas.yml b/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas.yml
index 2b9db7dc3e..e1e36b201a 100644
--- a/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas.yml
+++ b/source/initial-dns-seedlist-discovery/tests/replica-set/dbname-with-commas.yml
@@ -10,4 +10,4 @@ options:
   replicaSet: repl0
   ssl: true
 parsed_options:
-  defaultDatabase: some,db
+  auth_database: some,db
diff --git a/source/initial-dns-seedlist-discovery/tests/replica-set/encoded-userinfo-and-db.json b/source/initial-dns-seedlist-discovery/tests/replica-set/encoded-userinfo-and-db.json
index 4493628be9..da56858c48 100644
--- a/source/initial-dns-seedlist-discovery/tests/replica-set/encoded-userinfo-and-db.json
+++ b/source/initial-dns-seedlist-discovery/tests/replica-set/encoded-userinfo-and-db.json
@@ -15,7 +15,7 @@
   "parsed_options": {
     "user": "b*b@f3tt=",
     "password": "$4to@L8=MC",
-    "db": "mydb?"
+    "auth_database": "mydb?"
   },
   "ping": false,
   "comment": "Encoded user, pass, and DB parse correctly"
diff --git a/source/initial-dns-seedlist-discovery/tests/replica-set/encoded-userinfo-and-db.yml b/source/initial-dns-seedlist-discovery/tests/replica-set/encoded-userinfo-and-db.yml
index 4b25a46db5..1e7f27f879 100644
--- a/source/initial-dns-seedlist-discovery/tests/replica-set/encoded-userinfo-and-db.yml
+++ b/source/initial-dns-seedlist-discovery/tests/replica-set/encoded-userinfo-and-db.yml
@@ -11,7 +11,7 @@ options:
 parsed_options:
     user: "b*b@f3tt="
     password: "$4to@L8=MC"
-    db: "mydb?"
+    auth_database: "mydb?"
 # Don't run a ping for URIs that include userinfo. Ping doesn't require authentication, so missing
 # userinfo isn't a problem, but some drivers will fail handshake on a connection if userinfo is
 # provided but incorrect.