diff --git a/modules/ROOT/pages/syntax/keywords.adoc b/modules/ROOT/pages/syntax/keywords.adoc
index 4e7a24477..e1f0fe5ff 100644
--- a/modules/ROOT/pages/syntax/keywords.adoc
+++ b/modules/ROOT/pages/syntax/keywords.adoc
@@ -54,6 +54,9 @@ RETURN `true` AS x
 1+d|Rows: 1
 |===
 
+[NOTE]
+The keywords `NOT`, `NULL`, `TYPED`, `NORMALIZED`, `NFC`, `NFD`, `NFKC`, and `NFKD` are not allowed as label names after the keyword `IS` unless they are quoted by backticks.
+For example, `CREATE (n IS NOT)` is invalid, but `CREATE (n IS ++`NOT`++)` is allowed.
 
 == List of keywords