diff --git a/EIPS/eip-998.md b/EIPS/eip-998.md
index c4cd113c..f5718600 100644
--- a/EIPS/eip-998.md
+++ b/EIPS/eip-998.md
@@ -298,7 +298,7 @@ interface ERC998ERC721TopDown {
     uint256 _childTokenId, 
     bytes _data
   ) 
-    external
+    external;
   
   /// @notice Get a child token from an ERC721 contract.
   /// @param _from The address that owns the child token.