diff --git a/transport/include/hidl/ServiceManagement.h b/transport/include/hidl/ServiceManagement.h
index d4552a7..2035fb7 100644
--- a/transport/include/hidl/ServiceManagement.h
+++ b/transport/include/hidl/ServiceManagement.h
@@ -17,6 +17,7 @@
 #ifndef ANDROID_HARDWARE_ISERVICE_MANAGER_H
 #define ANDROID_HARDWARE_ISERVICE_MANAGER_H
 
+#include <string>
 #include <utils/StrongPointer.h>
 
 namespace android {
@@ -37,6 +38,10 @@
 sp<::android::hidl::manager::V1_0::IServiceManager> defaultServiceManager();
 sp<::android::hidl::manager::V1_0::IServiceManager> getPassthroughServiceManager();
 
+namespace details {
+void waitForHwService(const std::string &interface, const std::string &instanceName);
+};
+
 }; // namespace hardware
 }; // namespace android