diff --git a/OpenAPI/TS28105_AiMlNrm.yaml b/OpenAPI/TS28105_AiMlNrm.yaml
index 4bdb73a0e7787862d51903c1fd4f65846230569c..47d3a1f84550ef74400dec67b516d743c81195d4 100644
--- a/OpenAPI/TS28105_AiMlNrm.yaml
+++ b/OpenAPI/TS28105_AiMlNrm.yaml
@@ -455,7 +455,9 @@ components:
                 runTimeContext:
                   $ref: '#/components/schemas/MLContext'
                 supportedPerformanceIndicators:
-                  $ref: '#/components/schemas/SupportedPerfIndicator'
+                  type: array
+                  items:
+                    $ref: '#/components/schemas/SupportedPerfIndicator'
                 mLCapabilitiesInfoList:
                   type: array
                   items: