diff --git a/.changeset/fancy-horses-drop.md b/.changeset/fancy-horses-drop.md
new file mode 100644
index 0000000000..b073cd4d84
--- /dev/null
+++ b/.changeset/fancy-horses-drop.md
@@ -0,0 +1,5 @@
+---
+"@lynx-js/web-elements": patch
+---
+
+fix: incorrect syntax for x-canvas part
diff --git a/packages/web-platform/web-elements/src/XCanvas/x-canvas.css b/packages/web-platform/web-elements/src/XCanvas/x-canvas.css
index 3daf3aebde..1603706020 100644
--- a/packages/web-platform/web-elements/src/XCanvas/x-canvas.css
+++ b/packages/web-platform/web-elements/src/XCanvas/x-canvas.css
@@ -10,7 +10,7 @@ x-canvas {
 x-canvas > * {
   display: none !important;
 }
-x-canvas::part {
+x-canvas::part(canvas) {
   height: 100%;
   width: 100%;
 }