diff --git a/phonemetadata.proto b/phonemetadata.proto
index 6c5ac81..900dc29 100644
--- a/phonemetadata.proto
+++ b/phonemetadata.proto
@@ -21,8 +21,6 @@
 
 syntax = "proto2";
 
-option optimize_for = LITE_RUNTIME;
-
 option java_package = "com.google.i18n.phonenumbers";
 package phonenumbers;
 
diff --git a/phonenumber.proto b/phonenumber.proto
index bb69fe3..01d81c0 100644
--- a/phonenumber.proto
+++ b/phonenumber.proto
@@ -20,7 +20,6 @@
 syntax = "proto2";
 
 option java_package = "com.google.i18n.phonenumbers";
-option optimize_for = LITE_RUNTIME;
 
 package phonenumbers;