diff --git a/pc/media_session_unittest.cc b/pc/media_session_unittest.cc
index ba4db0a..8b5e320 100644
--- a/pc/media_session_unittest.cc
+++ b/pc/media_session_unittest.cc
@@ -4599,7 +4599,7 @@
   // properly.
   send_codecs[1].channels = 0;
 
-  // Alther iLBC receive codec to be lowercase, to test that case conversions
+  // Alter iLBC receive codec to be lowercase, to test that case conversions
   // are handled properly.
   recv_codecs[2].name = "ilbc";