diff --git a/libs/binder/ProcessState.cpp b/libs/binder/ProcessState.cpp
index 68958e6..433885d 100644
--- a/libs/binder/ProcessState.cpp
+++ b/libs/binder/ProcessState.cpp
@@ -175,6 +175,10 @@
     // the thread handler is installed
     if (gProcess) {
         gProcess->mForked = true;
+
+        // "O_CLOFORK"
+        close(gProcess->mDriverFD);
+        gProcess->mDriverFD = -1;
     }
     gProcessMutex.unlock();
 }