diff --git a/cmds/idmap2/tests/FileUtilsTests.cpp b/cmds/idmap2/tests/FileUtilsTests.cpp
index 5750ca1..b160e8e 100644
--- a/cmds/idmap2/tests/FileUtilsTests.cpp
+++ b/cmds/idmap2/tests/FileUtilsTests.cpp
@@ -27,8 +27,9 @@
 #ifdef __ANDROID__
 TEST(FileUtilsTests, UidHasWriteAccessToPath) {
   constexpr const char* tmp_path = "/data/local/tmp/test@idmap";
-  const std::string cache_path(base::StringPrintf("%s/test@idmap", kIdmapCacheDir));
-  const std::string sneaky_cache_path(base::StringPrintf("/data/../%s/test@idmap", kIdmapCacheDir));
+  const std::string cache_path(base::StringPrintf("%s/test@idmap", kIdmapCacheDir.data()));
+  const std::string sneaky_cache_path(
+      base::StringPrintf("/data/../%s/test@idmap", kIdmapCacheDir.data()));
 
   ASSERT_TRUE(UidHasWriteAccessToPath(AID_ROOT, tmp_path));
   ASSERT_TRUE(UidHasWriteAccessToPath(AID_ROOT, cache_path));
diff --git a/cmds/idmap2/tests/IdmapTests.cpp b/cmds/idmap2/tests/IdmapTests.cpp
index b473f26..f6e48ba 100644
--- a/cmds/idmap2/tests/IdmapTests.cpp
+++ b/cmds/idmap2/tests/IdmapTests.cpp
@@ -613,19 +613,19 @@
   }
 
   void visit(const Idmap& idmap ATTRIBUTE_UNUSED) override {
-    stream_ << "TestVisitor::visit(Idmap)" << std::endl;
+    stream_ << "TestVisitor::visit(Idmap)" << '\n';
   }
 
   void visit(const IdmapHeader& idmap ATTRIBUTE_UNUSED) override {
-    stream_ << "TestVisitor::visit(IdmapHeader)" << std::endl;
+    stream_ << "TestVisitor::visit(IdmapHeader)" << '\n';
   }
 
   void visit(const IdmapData& idmap ATTRIBUTE_UNUSED) override {
-    stream_ << "TestVisitor::visit(IdmapData)" << std::endl;
+    stream_ << "TestVisitor::visit(IdmapData)" << '\n';
   }
 
   void visit(const IdmapData::Header& idmap ATTRIBUTE_UNUSED) override {
-    stream_ << "TestVisitor::visit(IdmapData::Header)" << std::endl;
+    stream_ << "TestVisitor::visit(IdmapData::Header)" << '\n';
   }
 
  private: