diff --git a/linker/linker.cpp b/linker/linker.cpp
index 8b467a3..e13d37d 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -3595,7 +3595,7 @@
   // 2. Initialize other namespaces
 
   for (auto& ns_config : namespace_configs) {
-    if (namespaces.find(ns_config->name()) != namespaces.end()) {
+    if (namespaces.contains(ns_config->name())) {
       continue;
     }
 
diff --git a/linker/linker_config.cpp b/linker/linker_config.cpp
index ad40c50..70430b8 100644
--- a/linker/linker_config.cpp
+++ b/linker/linker_config.cpp
@@ -304,7 +304,7 @@
     }
 
     if (result == ConfigParser::kPropertyAssign) {
-      if (properties->find(name) != properties->end()) {
+      if (properties->contains(name)) {
         DL_WARN("%s:%zd: warning: redefining property \"%s\" (overriding previous value)",
                 ld_config_file_path,
                 cp.lineno(),
@@ -313,7 +313,7 @@
 
       (*properties)[name] = PropertyValue(std::move(value), cp.lineno());
     } else if (result == ConfigParser::kPropertyAppend) {
-      if (properties->find(name) == properties->end()) {
+      if (!properties->contains(name)) {
         DL_WARN("%s:%zd: warning: appending to undefined property \"%s\" (treating as assignment)",
                 ld_config_file_path,
                 cp.lineno(),
@@ -526,7 +526,7 @@
         properties.get_strings(property_name_prefix + ".links", &lineno);
 
     for (const auto& linked_ns_name : linked_namespaces) {
-      if (namespace_configs.find(linked_ns_name) == namespace_configs.end()) {
+      if (!namespace_configs.contains(linked_ns_name)) {
         *error_msg = create_error_msg(ld_config_file_path,
                                       lineno,
                                       std::string("undefined namespace: ") + linked_ns_name);
diff --git a/linker/linker_namespaces.cpp b/linker/linker_namespaces.cpp
index 5182129..eb9dae9 100644
--- a/linker/linker_namespaces.cpp
+++ b/linker/linker_namespaces.cpp
@@ -100,7 +100,7 @@
     // be searched.
     if (allow_secondary) {
       const android_namespace_list_t& secondary_namespaces = si->get_secondary_namespaces();
-      if (secondary_namespaces.find(this) != secondary_namespaces.end()) {
+      if (secondary_namespaces.contains(this)) {
         return true;
       }
     }
diff --git a/linker/linker_soinfo.cpp b/linker/linker_soinfo.cpp
index 802c06a..d915503 100644
--- a/linker/linker_soinfo.cpp
+++ b/linker/linker_soinfo.cpp
@@ -887,7 +887,7 @@
     handle_ = handle_ | 1;
   } while (handle_ == reinterpret_cast<uintptr_t>(RTLD_DEFAULT) ||
            handle_ == reinterpret_cast<uintptr_t>(RTLD_NEXT) ||
-           g_soinfo_handles_map.find(handle_) != g_soinfo_handles_map.end());
+           g_soinfo_handles_map.contains(handle_));
 
   g_soinfo_handles_map[handle_] = this;
 }