diff --git a/transport/ServiceManagement.cpp b/transport/ServiceManagement.cpp
index 0e56d18..8121911 100644
--- a/transport/ServiceManagement.cpp
+++ b/transport/ServiceManagement.cpp
@@ -196,7 +196,7 @@
                      << ": null binderized manager.";
         return;
     }
-    auto ret = binderizedManager->registerPassthroughClient(interfaceName, instanceName, getpid());
+    auto ret = binderizedManager->registerPassthroughClient(interfaceName, instanceName);
     if (!ret.isOk()) {
         LOG(WARNING) << "Could not registerReference for "
                      << interfaceName << "/" << instanceName
@@ -341,7 +341,7 @@
         return Void();
     }
 
-    Return<void> registerPassthroughClient(const hidl_string &, const hidl_string &, int32_t) override {
+    Return<void> registerPassthroughClient(const hidl_string &, const hidl_string &) override {
         // This makes no sense.
         LOG(FATAL) << "Cannot call registerPassthroughClient on passthrough service manager. "
                    << "Call it on defaultServiceManager() instead.";
diff --git a/transport/manager/1.0/IServiceManager.hal b/transport/manager/1.0/IServiceManager.hal
index 1a37c54..2b59a56 100644
--- a/transport/manager/1.0/IServiceManager.hal
+++ b/transport/manager/1.0/IServiceManager.hal
@@ -156,9 +156,9 @@
     /**
      * When the passthrough service manager returns a service via
      * get(string, string), it must dispatch a registerPassthroughClient call
-     * to the binderized service manager to indicate which process has called
-     * get. Binderized service manager must record this PID, which can
+     * to the binderized service manager to indicate the current process has
+     * called get(). Binderized service manager must record this PID, which can
      * be retrieved via debugDump.
      */
-    oneway registerPassthroughClient(string fqName, string name, int32_t pid);
+    registerPassthroughClient(string fqName, string name);
 };