diff --git a/libs/binder/ProcessState.cpp b/libs/binder/ProcessState.cpp
index 33fe26c..5114ac1 100644
--- a/libs/binder/ProcessState.cpp
+++ b/libs/binder/ProcessState.cpp
@@ -364,6 +364,13 @@
 
 ProcessState::~ProcessState()
 {
+    if (mDriverFD >= 0) {
+        if (mVMStart != MAP_FAILED) {
+            munmap(mVMStart, BINDER_VM_SIZE);
+        }
+        close(mDriverFD);
+    }
+    mDriverFD = -1;
 }
         
 }; // namespace android