diff --git a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json
index cd83911b990c..945d523739d5 100644
--- a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json
+++ b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json
@@ -4111,7 +4111,7 @@
         "dataset"
       ]
     },
-    "AzureDataExplorerCommand": {
+    "AzureDataExplorerCommandActivity": {
       "x-ms-discriminator-value": "AzureDataExplorerCommand",
       "description": "Azure Data Explorer command activity.",
       "allOf": [
@@ -4136,6 +4136,10 @@
         "command": {
           "type": "object",
           "description": "A control command, according to the Azure Data Explorer command syntax. Type: string (or Expression with resultType string)."
+        },
+        "commandTimeout": {
+          "type": "object",
+          "description": "Control command timeout. Type: string (or Expression with resultType string), pattern: ((\\d+)\\.)?(\\d\\d):(60|([0-5][0-9])):(60|([0-5][0-9]))..)"
         }
       },
       "required": [