diff --git a/webrtc/build/webrtc.gni b/webrtc/build/webrtc.gni
index e97d06633b..e4dacf333c 100644
--- a/webrtc/build/webrtc.gni
+++ b/webrtc/build/webrtc.gni
@@ -180,7 +180,7 @@ rtc_common_inherited_config = webrtc_root + ":common_inherited_config"
 rtc_remove_configs = []
 rtc_add_configs = [ rtc_common_config ]
 
-if (!is_debug) {
+if (!is_debug && is_win) {
   rtc_remove_configs += [ "//build/config/compiler:default_optimization" ]
   rtc_add_configs += [ "//build/config/compiler:optimize_max" ]
 }