diff --git a/java/src/com/android/inputmethod/latin/BinaryDictionaryFileDumper.java b/java/src/com/android/inputmethod/latin/BinaryDictionaryFileDumper.java
index 00d80f566..41b577cf3 100644
--- a/java/src/com/android/inputmethod/latin/BinaryDictionaryFileDumper.java
+++ b/java/src/com/android/inputmethod/latin/BinaryDictionaryFileDumper.java
@@ -107,6 +107,7 @@ public class BinaryDictionaryFileDumper {
         if (null == afd) return null;
         final String fileName =
                 copyFileTo(afd.createInputStream(), getCacheFileNameForLocale(locale, context));
+        afd.close();
         return Arrays.asList(AssetFileAddress.makeFromFileName(fileName));
     }