diff --git a/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2017-11-11-preview/blueprintAssignment.json b/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2017-11-11-preview/blueprintAssignment.json
index e112827a84e8..5d683470aa29 100644
--- a/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2017-11-11-preview/blueprintAssignment.json
+++ b/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2017-11-11-preview/blueprintAssignment.json
@@ -339,7 +339,7 @@
       "properties": {},
       "additionalProperties": {
         "description": "keyValue pair of parameter fulfillment.",
-        "$ref": "#/definitions/ParameterValueBase"
+        "$ref": "#/definitions/ParameterValue"
       }
     },
     "ParameterValueBase": {
diff --git a/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2017-11-11-preview/blueprintDefinition.json b/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2017-11-11-preview/blueprintDefinition.json
index 4ba4fbedb4da..c3d7078f0cb6 100644
--- a/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2017-11-11-preview/blueprintDefinition.json
+++ b/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2017-11-11-preview/blueprintDefinition.json
@@ -1012,7 +1012,7 @@
       "properties": {},
       "additionalProperties": {
         "description": "keyValue pair of parameter fulfillment.",
-        "$ref": "#/definitions/ParameterValueBase"
+        "$ref": "#/definitions/ParameterValue"
       }
     },
     "ParameterValueBase": {
diff --git a/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2018-11-01-preview/blueprintAssignment.json b/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2018-11-01-preview/blueprintAssignment.json
index 854a5822aec2..759a0d085604 100644
--- a/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2018-11-01-preview/blueprintAssignment.json
+++ b/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2018-11-01-preview/blueprintAssignment.json
@@ -43,7 +43,7 @@
         "description": "Create or update a blueprint assignment.",
         "x-ms-examples": {
           "Assignment with system-assigned managed identity": { "$ref": "./examples/BlueprintAssignment_Create_SystemAssignedMSI.json" },
-          "Assignment with user-assigned managed identity": { "$ref": "./examples/BlueprintAssignment_Create_UserAssignedMSI.json" } 
+          "Assignment with user-assigned managed identity": { "$ref": "./examples/BlueprintAssignment_Create_UserAssignedMSI.json" }
         },
         "parameters": [
           {
@@ -398,7 +398,7 @@
       "properties": {},
       "additionalProperties": {
         "description": "Key/Value pair of parameter fulfillment.",
-        "$ref": "#/definitions/ParameterValueBase"
+        "$ref": "#/definitions/ParameterValue"
       }
     },
     "ParameterValueBase": {
diff --git a/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2018-11-01-preview/blueprintDefinition.json b/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2018-11-01-preview/blueprintDefinition.json
index 8e438d1ceedd..72eb36f60d60 100644
--- a/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2018-11-01-preview/blueprintDefinition.json
+++ b/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2018-11-01-preview/blueprintDefinition.json
@@ -1073,7 +1073,7 @@
       "properties": {},
       "additionalProperties": {
         "description": "Key/Value pair of parameter fulfillment.",
-        "$ref": "#/definitions/ParameterValueBase"
+        "$ref": "#/definitions/ParameterValue"
       }
     },
     "ParameterValueBase": {