diff --git a/config/compiler/BUILD.gn b/config/compiler/BUILD.gn
index 152448667..c6ea8839a 100644
--- a/config/compiler/BUILD.gn
+++ b/config/compiler/BUILD.gn
@@ -842,11 +842,6 @@ config("default_warnings") {
       cflags += [ "/WX" ]
     }
 
-    cflags += [
-      # Assume UTF-8 by default to avoid code page dependencies.
-      "/utf-8",
-    ]
-
     cflags += [
       # Warnings permanently disabled:
 
@@ -1078,6 +1073,9 @@ config("default_warnings") {
 config("chromium_code") {
   if (is_win) {
     cflags = [ "/W4" ]  # Warning level 4.
+
+    # Assume UTF-8 by default to avoid code page dependencies.
+    cflags += [ "/utf-8" ]
   } else {
     cflags = [ "-Wall" ]
     if (treat_warnings_as_errors) {