diff --git a/packages/core/src/components/fields/MultiSchemaField.js b/packages/core/src/components/fields/MultiSchemaField.js
index fb4e53729b..1403c3592e 100644
--- a/packages/core/src/components/fields/MultiSchemaField.js
+++ b/packages/core/src/components/fields/MultiSchemaField.js
@@ -111,6 +111,7 @@ class AnyOfField extends Component {
       options,
       registry,
       uiSchema,
+      schema,
     } = this.props;
 
     const _SchemaField = registry.fields.SchemaField;
@@ -139,7 +140,9 @@ class AnyOfField extends Component {
       <div className="panel panel-default panel-body">
         <div className="form-group">
           <Widget
-            id={`${idSchema.$id}_anyof_select`}
+            id={`${idSchema.$id}${
+              schema.oneOf ? "__oneof_select" : "__anyof_select"
+            }`}
             schema={{ type: "number", default: 0 }}
             onChange={this.onOptionChange}
             onBlur={onBlur}
diff --git a/packages/core/test/anyOf_test.js b/packages/core/test/anyOf_test.js
index c1815962ad..bf81393d70 100644
--- a/packages/core/test/anyOf_test.js
+++ b/packages/core/test/anyOf_test.js
@@ -52,6 +52,7 @@ describe("anyOf", () => {
     });
 
     expect(node.querySelectorAll("select")).to.have.length.of(1);
+    expect(node.querySelector("select").id).eql("root__anyof_select");
   });
 
   it("should assign a default value and set defaults on option change", () => {
diff --git a/packages/core/test/oneOf_test.js b/packages/core/test/oneOf_test.js
index ca5badf76c..4d4dca922c 100644
--- a/packages/core/test/oneOf_test.js
+++ b/packages/core/test/oneOf_test.js
@@ -52,6 +52,7 @@ describe("oneOf", () => {
     });
 
     expect(node.querySelectorAll("select")).to.have.length.of(1);
+    expect(node.querySelector("select").id).eql("root__oneof_select");
   });
 
   it("should assign a default value and set defaults on option change", () => {