2 files changed, 9 insertions, 1 deletions
diff --git a/java/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderUtils.java b/java/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderUtils.java
index 2dbb5eb93..9a24c47af 100644
--- a/java/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderUtils.java
+++ b/java/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderUtils.java
@@ -643,6 +643,10 @@ public final class BinaryDictDecoderUtils {
      * @return true if it's a binary dictionary, false otherwise
      */
     public static boolean isBinaryDictionary(final File file) {
-        return FormatSpec.getDictDecoder(file).hasValidRawBinaryDictionary();
+        final DictDecoder dictDecoder = FormatSpec.getDictDecoder(file);
+        if (dictDecoder == null) {
+            return false;
+        }
+        return dictDecoder.hasValidRawBinaryDictionary();
     }
 }
diff --git a/java/src/com/android/inputmethod/latin/makedict/BinaryDictIOUtils.java b/java/src/com/android/inputmethod/latin/makedict/BinaryDictIOUtils.java
index 07ba777c7..0dc50d14e 100644
--- a/java/src/com/android/inputmethod/latin/makedict/BinaryDictIOUtils.java
+++ b/java/src/com/android/inputmethod/latin/makedict/BinaryDictIOUtils.java
@@ -309,6 +309,7 @@ public final class BinaryDictIOUtils {
      * @param file The file to read.
      * @param offset The offset in the file where to start reading the data.
      * @param length The length of the data file.
+     * @return the header of the specified dictionary file.
      */
     private static FileHeader getDictionaryFileHeader(
             final File file, final long offset, final long length)
@@ -330,6 +331,9 @@ public final class BinaryDictIOUtils {
                     }
                 }
         );
+        if (dictDecoder == null) {
+            return null;
+        }
         return dictDecoder.readHeader();
     }