diff --git a/esphome/analyze_memory/__init__.py b/esphome/analyze_memory/__init__.py
index 2a767f4d1c..bf1bcbfa05 100644
--- a/esphome/analyze_memory/__init__.py
+++ b/esphome/analyze_memory/__init__.py
@@ -594,7 +594,11 @@ class MemoryAnalyzer:
             #   3. Break remaining ties lexicographically.
             best_lib = min(
                 candidates,
-                key=lambda lib_name: (lib_name != base, len(lib_name), lib_name),
+                key=lambda lib_name, _base=base: (
+                    lib_name != _base,
+                    len(lib_name),
+                    lib_name,
+                ),
             )
             mapping[category] = f"{_COMPONENT_PREFIX_LIB}{best_lib}"