diff --git a/schemas/2017-04-01-preview/Microsoft.StreamAnalytics.json b/schemas/2017-04-01-preview/Microsoft.StreamAnalytics.json
index 21950a074b..52918d63ef 100644
--- a/schemas/2017-04-01-preview/Microsoft.StreamAnalytics.json
+++ b/schemas/2017-04-01-preview/Microsoft.StreamAnalytics.json
@@ -2167,12 +2167,13 @@
         "sizeWindow": {
           "oneOf": [
             {
-              "type": "number"
+              "type": "integer"
             },
             {
               "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
             }
-          ]
+          ],
+          "description": "The size window to constrain a Stream Analytics output to."
         },
         "timeWindow": {
           "type": "string"
diff --git a/schemas/2020-03-01/Microsoft.StreamAnalytics.json b/schemas/2020-03-01/Microsoft.StreamAnalytics.json
index 00fd96b4b9..ddf447b124 100644
--- a/schemas/2020-03-01/Microsoft.StreamAnalytics.json
+++ b/schemas/2020-03-01/Microsoft.StreamAnalytics.json
@@ -2255,7 +2255,7 @@
         "sizeWindow": {
           "oneOf": [
             {
-              "type": "number"
+              "type": "integer"
             },
             {
               "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
diff --git a/schemas/2021-10-01-preview/Microsoft.StreamAnalytics.json b/schemas/2021-10-01-preview/Microsoft.StreamAnalytics.json
index 7249e360f6..0855257ba5 100644
--- a/schemas/2021-10-01-preview/Microsoft.StreamAnalytics.json
+++ b/schemas/2021-10-01-preview/Microsoft.StreamAnalytics.json
@@ -2590,7 +2590,7 @@
         "sizeWindow": {
           "oneOf": [
             {
-              "type": "number"
+              "type": "integer"
             },
             {
               "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"