diff --git a/Documentation/devicetree/bindings/nvmem/st,stm32-romem.yaml b/Documentation/devicetree/bindings/nvmem/st,stm32-romem.yaml
index 3b2aa605a551..ab4cdc4e3614 100644
--- a/Documentation/devicetree/bindings/nvmem/st,stm32-romem.yaml
+++ b/Documentation/devicetree/bindings/nvmem/st,stm32-romem.yaml
@@ -31,7 +31,7 @@ properties:
     maxItems: 1
 
 patternProperties:
-  "^.*@[0-9a-f]+$":
+  "@[0-9a-f]+$":
     type: object
     $ref: layouts/fixed-cell.yaml
     unevaluatedProperties: false