diff --git a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
index 401ab7cdb379..035964a8609c 100644
--- a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
+++ b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
@@ -101,6 +101,7 @@ properties:
       - description: Tx Buffers 0-32 elements / 0-576 words
         minimum: 0
         maximum: 32
+    minItems: 1
 
   power-domains:
     description: