diff --git a/Documentation/devicetree/bindings/spmi/mtk,spmi-mtk-pmif.yaml b/Documentation/devicetree/bindings/spmi/mtk,spmi-mtk-pmif.yaml
index abcbbe13723f..1a36dd977366 100644
--- a/Documentation/devicetree/bindings/spmi/mtk,spmi-mtk-pmif.yaml
+++ b/Documentation/devicetree/bindings/spmi/mtk,spmi-mtk-pmif.yaml
@@ -14,7 +14,7 @@ description: |+
   for multiple SoCs to control a single SPMI master.
 
 allOf:
-  - $ref: "spmi.yaml"
+  - $ref: spmi.yaml
 
 properties:
   compatible: