diff --git a/.changeset/stale-crabs-deny.md b/.changeset/stale-crabs-deny.md
new file mode 100644
index 000000000..288de9e0d
--- /dev/null
+++ b/.changeset/stale-crabs-deny.md
@@ -0,0 +1,5 @@
+---
+'mermaid': minor
+---
+
+chore: use treemap instead of treemapdoc in parser.
diff --git a/packages/parser/src/language/index.ts b/packages/parser/src/language/index.ts
index c41d7eeb8..9b31af5ba 100644
--- a/packages/parser/src/language/index.ts
+++ b/packages/parser/src/language/index.ts
@@ -8,7 +8,7 @@ export {
   Architecture,
   GitGraph,
   Radar,
-  TreemapDoc,
+  Treemap,
   Branch,
   Commit,
   Merge,
@@ -20,7 +20,7 @@ export {
   isPieSection,
   isArchitecture,
   isGitGraph,
-  isTreemapDoc,
+  isTreemap,
   isBranch,
   isCommit,
   isMerge,
diff --git a/packages/parser/src/language/treemap/treemap.langium b/packages/parser/src/language/treemap/treemap.langium
index 45ee2588f..c35d5f0e9 100644
--- a/packages/parser/src/language/treemap/treemap.langium
+++ b/packages/parser/src/language/treemap/treemap.langium
@@ -34,14 +34,14 @@ interface ClassDefStatement {
     className: string
     styleText: string // Optional style text
 }
-interface TreemapDoc {
+interface Treemap {
     TreemapRows: TreemapRow[]
     title?: string
     accTitle?: string
     accDescr?: string
 }
 
-entry TreemapDoc returns TreemapDoc:
+entry Treemap returns Treemap:
     TREEMAP_KEYWORD
     (
         TitleAndAccessibilities