diff --git a/ets2panda/lexer/scripts/keywords.yaml b/ets2panda/lexer/scripts/keywords.yaml
index 181807709f96a398c52b13907044ad2992f77c57..1f6e20e9bed3d8baf7e2652b607694d5da512a64 100644
--- a/ets2panda/lexer/scripts/keywords.yaml
+++ b/ets2panda/lexer/scripts/keywords.yaml
@@ -265,8 +265,7 @@ keywords:
 
   - name: 'is'
     token: KEYW_IS
-    keyword: [ets]
-    keyword_like: [ts]
+    keyword_like: [ets, ts]
 
   - name: 'isize'
     token: KEYW_ISIZE