diff --git a/sdk/cosmos/azure-cosmos/src/main/java/com/azure/cosmos/implementation/directconnectivity/StoreReader.java b/sdk/cosmos/azure-cosmos/src/main/java/com/azure/cosmos/implementation/directconnectivity/StoreReader.java
index b2dcf1667649..eb1663ceacb9 100644
--- a/sdk/cosmos/azure-cosmos/src/main/java/com/azure/cosmos/implementation/directconnectivity/StoreReader.java
+++ b/sdk/cosmos/azure-cosmos/src/main/java/com/azure/cosmos/implementation/directconnectivity/StoreReader.java
@@ -543,7 +543,7 @@ private Mono<ReadReplicaResult> readPrimaryInternalAsync(
                 }
         ).onErrorResume(t -> {
             Throwable unwrappedException = Exceptions.unwrap(t);
-            logger.debug("Exception {} is thrown while doing READ Primary", unwrappedException);
+            logger.debug("Exception is thrown while doing READ Primary", unwrappedException);
 
             Exception storeTaskException = Utils.as(unwrappedException, Exception.class);
             if (storeTaskException == null) {
diff --git a/sdk/cosmos/azure-cosmos/src/main/java/com/azure/cosmos/implementation/directconnectivity/rntbd/RntbdObjectMapper.java b/sdk/cosmos/azure-cosmos/src/main/java/com/azure/cosmos/implementation/directconnectivity/rntbd/RntbdObjectMapper.java
index 8be8a7ed02da..a52025402c0a 100644
--- a/sdk/cosmos/azure-cosmos/src/main/java/com/azure/cosmos/implementation/directconnectivity/rntbd/RntbdObjectMapper.java
+++ b/sdk/cosmos/azure-cosmos/src/main/java/com/azure/cosmos/implementation/directconnectivity/rntbd/RntbdObjectMapper.java
@@ -14,8 +14,6 @@
 import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider;
 import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
 import com.fasterxml.jackson.datatype.jsr310.deser.DurationDeserializer;
-import com.fasterxml.jackson.datatype.jsr310.deser.key.OffsetDateTimeKeyDeserializer;
-import com.fasterxml.jackson.module.afterburner.AfterburnerModule;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.ByteBufInputStream;
 import io.netty.handler.codec.CorruptedFrameException;
@@ -42,8 +40,7 @@ public final class RntbdObjectMapper {
             .addSerializer(Duration.class, ToStringSerializer.instance)
             .addDeserializer(Duration.class, DurationDeserializer.INSTANCE)
             .addSerializer(Instant.class, ToStringSerializer.instance))
-        .setFilterProvider(filterProvider)
-        .registerModule(new AfterburnerModule());
+        .setFilterProvider(filterProvider);
 
     private static final ObjectWriter objectWriter = objectMapper.writer();