diff --git a/mcp/src/main/java/io/modelcontextprotocol/spec/McpClientSession.java b/mcp/src/main/java/io/modelcontextprotocol/spec/McpClientSession.java
index cc7d2abf8..f7db3d7aa 100644
--- a/mcp/src/main/java/io/modelcontextprotocol/spec/McpClientSession.java
+++ b/mcp/src/main/java/io/modelcontextprotocol/spec/McpClientSession.java
@@ -221,7 +221,7 @@ private Mono<Void> handleIncomingNotification(McpSchema.JSONRPCNotification noti
 		return Mono.defer(() -> {
 			var handler = notificationHandlers.get(notification.method());
 			if (handler == null) {
-				logger.error("No handler registered for notification method: {}", notification.method());
+				logger.warn("No handler registered for notification method: {}", notification);
 				return Mono.empty();
 			}
 			return handler.handle(notification.params());
diff --git a/mcp/src/main/java/io/modelcontextprotocol/spec/McpServerSession.java b/mcp/src/main/java/io/modelcontextprotocol/spec/McpServerSession.java
index de7c48a4f..62985dc17 100644
--- a/mcp/src/main/java/io/modelcontextprotocol/spec/McpServerSession.java
+++ b/mcp/src/main/java/io/modelcontextprotocol/spec/McpServerSession.java
@@ -294,7 +294,7 @@ private Mono<Void> handleIncomingNotification(McpSchema.JSONRPCNotification noti
 
 			var handler = notificationHandlers.get(notification.method());
 			if (handler == null) {
-				logger.error("No handler registered for notification method: {}", notification.method());
+				logger.warn("No handler registered for notification method: {}", notification);
 				return Mono.empty();
 			}
 			return this.exchangeSink.asMono().flatMap(exchange -> handler.handle(exchange, notification.params()));
diff --git a/mcp/src/main/java/io/modelcontextprotocol/spec/McpStreamableServerSession.java b/mcp/src/main/java/io/modelcontextprotocol/spec/McpStreamableServerSession.java
index 3eec75c09..ef7967c1e 100644
--- a/mcp/src/main/java/io/modelcontextprotocol/spec/McpStreamableServerSession.java
+++ b/mcp/src/main/java/io/modelcontextprotocol/spec/McpStreamableServerSession.java
@@ -197,7 +197,7 @@ public Mono<Void> accept(McpSchema.JSONRPCNotification notification) {
 			McpTransportContext transportContext = ctx.getOrDefault(McpTransportContext.KEY, McpTransportContext.EMPTY);
 			McpNotificationHandler notificationHandler = this.notificationHandlers.get(notification.method());
 			if (notificationHandler == null) {
-				logger.error("No handler registered for notification method: {}", notification.method());
+				logger.warn("No handler registered for notification method: {}", notification);
 				return Mono.empty();
 			}
 			McpLoggableSession listeningStream = this.listeningStreamRef.get();