diff --git a/esphome/analyze_memory/cli.py b/esphome/analyze_memory/cli.py
index 83266d9ade..7a20d43c0d 100644
--- a/esphome/analyze_memory/cli.py
+++ b/esphome/analyze_memory/cli.py
@@ -6,6 +6,7 @@ from collections import defaultdict
 from collections.abc import Callable
 import heapq
 import json
+from operator import itemgetter
 import sys
 from typing import TYPE_CHECKING
 
@@ -164,7 +165,7 @@ class MemoryAnalyzerCLI(MemoryAnalyzer):
 
         # Get top N symbols by size using heapq for efficiency
         top_symbols = heapq.nlargest(
-            self.TOP_SYMBOLS_LIMIT, all_symbols, key=lambda x: x[2]
+            self.TOP_SYMBOLS_LIMIT, all_symbols, key=itemgetter(2)
         )
 
         lines.append("")