diff --git a/packager/hls/base/simple_hls_notifier.cc b/packager/hls/base/simple_hls_notifier.cc
index 93e8beec52..d77b61552b 100644
--- a/packager/hls/base/simple_hls_notifier.cc
+++ b/packager/hls/base/simple_hls_notifier.cc
@@ -178,9 +178,9 @@ bool HandleWidevineKeyFormats(
       return false;
     }
     // This format does not have a key id field.
-    NotifyEncryptionToMediaPlaylist(
-        encryption_method, key_uri_data,
-        std::vector<uint8_t>(), iv, "com.widevine", "", media_playlist);
+    NotifyEncryptionToMediaPlaylist(encryption_method, key_uri_data,
+                                    std::vector<uint8_t>(), iv, "com.widevine",
+                                    "1", media_playlist);
   }
 
   std::string pssh_as_string(
diff --git a/packager/hls/base/simple_hls_notifier_unittest.cc b/packager/hls/base/simple_hls_notifier_unittest.cc
index c98a2bccb3..44abea21b6 100644
--- a/packager/hls/base/simple_hls_notifier_unittest.cc
+++ b/packager/hls/base/simple_hls_notifier_unittest.cc
@@ -689,22 +689,21 @@ TEST_F(SimpleHlsNotifierTest, WidevineNotifyEncryptionUpdateEmptyIv) {
                           widevine_system_id_.size());
   pssh_info.add_key_id(any_key_id);
 
-  EXPECT_CALL(
-      *mock_media_playlist,
-      AddEncryptionInfo(_,
-                        StrEq("data:text/plain;base64," + expected_json_base64),
-                        StrEq(""),
-                        StrEq(""), StrEq("com.widevine"), _));
-
   EXPECT_CALL(*mock_media_playlist,
               AddEncryptionInfo(
-                  _,
-                  StrEq("data:text/plain;base64,"
-                        "AAAAS3Bzc2gAAAAA7e+"
-                        "LqXnWSs6jyCfc1R0h7QAAACsSEBEiM0QRIjNEESIzRBEiM0QaDHNvb"
-                        "WVwcm92aWRlciIJY29udGVudGlk"),
-                  StrEq("0x11223344112233441122334411223344"), StrEq(""),
-                  StrEq("urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"), _));
+                  _, StrEq("data:text/plain;base64," + expected_json_base64),
+                  StrEq(""), StrEq(""), StrEq("com.widevine"), StrEq("1")));
+
+  EXPECT_CALL(
+      *mock_media_playlist,
+      AddEncryptionInfo(
+          _,
+          StrEq("data:text/plain;base64,"
+                "AAAAS3Bzc2gAAAAA7e+"
+                "LqXnWSs6jyCfc1R0h7QAAACsSEBEiM0QRIjNEESIzRBEiM0QaDHNvb"
+                "WVwcm92aWRlciIJY29udGVudGlk"),
+          StrEq("0x11223344112233441122334411223344"), StrEq(""),
+          StrEq("urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"), StrEq("1")));
   std::vector<uint8_t> pssh_as_vec = pssh_info.CreateBox();
   std::string pssh_in_string(pssh_as_vec.begin(), pssh_as_vec.end());
   std::string base_64_encoded_pssh;