diff --git a/schemas/2020-11-01/Microsoft.ContainerInstance.json b/schemas/2020-11-01/Microsoft.ContainerInstance.json
index 562815e1ea..cdac4f02c7 100644
--- a/schemas/2020-11-01/Microsoft.ContainerInstance.json
+++ b/schemas/2020-11-01/Microsoft.ContainerInstance.json
@@ -398,7 +398,10 @@
         "httpHeaders": {
           "oneOf": [
             {
-              "$ref": "#/definitions/HttpHeaders"
+              "type": "array",
+              "items": {
+                "$ref": "#/definitions/HttpHeader"
+              }
             },
             {
               "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
@@ -796,7 +799,7 @@
       ],
       "description": "The GPU resource."
     },
-    "HttpHeaders": {
+    "HttpHeader": {
       "type": "object",
       "properties": {
         "name": {
@@ -808,7 +811,7 @@
           "description": "The header value."
         }
       },
-      "description": "The HTTP headers."
+      "description": "The HTTP header."
     },
     "ImageRegistryCredential": {
       "type": "object",
diff --git a/schemas/2021-03-01/Microsoft.ContainerInstance.json b/schemas/2021-03-01/Microsoft.ContainerInstance.json
index 934acb4947..e695dd8cc3 100644
--- a/schemas/2021-03-01/Microsoft.ContainerInstance.json
+++ b/schemas/2021-03-01/Microsoft.ContainerInstance.json
@@ -398,7 +398,10 @@
         "httpHeaders": {
           "oneOf": [
             {
-              "$ref": "#/definitions/HttpHeaders"
+              "type": "array",
+              "items": {
+                "$ref": "#/definitions/HttpHeader"
+              }
             },
             {
               "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
@@ -796,7 +799,7 @@
       ],
       "description": "The GPU resource."
     },
-    "HttpHeaders": {
+    "HttpHeader": {
       "type": "object",
       "properties": {
         "name": {
@@ -808,7 +811,7 @@
           "description": "The header value."
         }
       },
-      "description": "The HTTP headers."
+      "description": "The HTTP header"
     },
     "ImageRegistryCredential": {
       "type": "object",