diff --git a/tools/gn/ninja_binary_target_writer.cc b/tools/gn/ninja_binary_target_writer.cc
index 971f4d8..1fc06b2 100644
--- a/tools/gn/ninja_binary_target_writer.cc
+++ b/tools/gn/ninja_binary_target_writer.cc
@@ -650,8 +650,7 @@
   const std::string framework_ending(".framework");
   for (size_t i = 0; i < all_libs.size(); i++) {
     if (settings_->IsMac() &&
-        base::EndsWith(all_libs[i], framework_ending,
-                       base::CompareCase::INSENSITIVE_ASCII)) {
+        base::EndsWith(all_libs[i], framework_ending, false)) {
       // Special-case libraries ending in ".framework" on Mac. Add the
       // -framework switch and don't add the extension to the output.
       out_ << " -framework ";
diff --git a/tools/gn/ninja_target_writer.cc b/tools/gn/ninja_target_writer.cc
index 7913735..e03b2d2 100644
--- a/tools/gn/ninja_target_writer.cc
+++ b/tools/gn/ninja_target_writer.cc
@@ -242,8 +242,7 @@
 
   // First validate that the target's dependency is a stamp file. Otherwise,
   // we shouldn't have gotten here!
-  CHECK(base::EndsWith(stamp_file.value(), ".stamp",
-                       base::CompareCase::INSENSITIVE_ASCII))
+  CHECK(base::EndsWith(stamp_file.value(), ".stamp", false))
       << "Output should end in \".stamp\" for stamp file output. Instead got: "
       << "\"" << stamp_file.value() << "\"";