diff --git a/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/CommonUsbSerialPort.java b/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/CommonUsbSerialPort.java
index 1fec25b..2cb8631 100644
--- a/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/CommonUsbSerialPort.java
+++ b/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/CommonUsbSerialPort.java
@@ -102,7 +102,9 @@ public abstract class CommonUsbSerialPort implements UsbSerialPort {
             mUsbRequest = new UsbRequest();
             mUsbRequest.initialize(mConnection, mReadEndpoint);
         } catch(Exception e) {
-            close();
+            try {
+                close();
+            } catch(Exception ignored) {}
             throw e;
         }
     }