diff --git a/esphome/components/api/crypto_optimize.py.script b/esphome/components/api/crypto_optimize.py.script
index fe693d1911..1093a09bf6 100644
--- a/esphome/components/api/crypto_optimize.py.script
+++ b/esphome/components/api/crypto_optimize.py.script
@@ -1,9 +1,9 @@
-# Compile crypto libraries with -O2 for speed instead of the default -Os.
-# Crypto is CPU-bound and benefits significantly from speed optimization.
-# GCC uses the last -O flag, so appending -O2 overrides the global -Os
-# for these libraries only.
+# Compile libsodium with -O2 for speed instead of the default -Os.
+# libsodium provides the crypto primitives (Curve25519, ChaCha20, Poly1305)
+# used by the Noise protocol and benefits significantly from speed optimization.
+# GCC uses the last -O flag, so appending -O2 overrides the global -Os.
 Import("env")
 
 for lb in env.GetLibBuilders():
-    if lb.name in ("noise-c", "libsodium"):
+    if lb.name == "libsodium":
         lb.env.Append(CCFLAGS=["-O2"])