diff --git a/lib/opentok/opentok.rb b/lib/opentok/opentok.rb
index 7aaf1df..ae34784 100644
--- a/lib/opentok/opentok.rb
+++ b/lib/opentok/opentok.rb
@@ -36,7 +36,7 @@ module OpenTok
   #     the token.
   #
   #   @param [Hash] options A hash defining options for the token.
-  #   @option options [String] :token_type The type of token to generate. Must be one of 'T1' or 'JWT'.
+  #   @option options [String] :token_type The type of token to generate. Must be one of 'T1' or 'JWT'. 'JWT' is the default.
   #   @option options [Symbol] :role The role for the token. Set this to one of the following
   #     values:
   #     * <code>:subscriber</code> -- A subscriber can only subscribe to streams.
diff --git a/lib/opentok/session.rb b/lib/opentok/session.rb
index 7d98c92..fba1475 100644
--- a/lib/opentok/session.rb
+++ b/lib/opentok/session.rb
@@ -28,7 +28,7 @@ module OpenTok
   #   Generates a token.
   #
   #   @param [Hash] options
-  #   @option options [String] :token_type The type of token to generate. Must be one of 'T1' or 'JWT'.
+  #   @option options [String] :token_type The type of token to generate. Must be one of 'T1' or 'JWT'. 'JWT' is the default.
   #   @option options [Symbol] :role The role for the token. Set this to one of the following
   #     values:
   #     * <code>:subscriber</code> -- A subscriber can only subscribe to streams.