diff --git a/packages/graphql-language-service-server/src/__tests__/MessageProcessor.spec.ts b/packages/graphql-language-service-server/src/__tests__/MessageProcessor.spec.ts
index ffbe0dc6f3..1704e4e36e 100644
--- a/packages/graphql-language-service-server/src/__tests__/MessageProcessor.spec.ts
+++ b/packages/graphql-language-service-server/src/__tests__/MessageProcessor.spec.ts
@@ -436,7 +436,7 @@ describe('MessageProcessor with config', () => {
         character: 0,
       },
       end: {
-        line: 102 + offset,
+        line: 103 + offset,
         character: 1,
       },
     });
@@ -450,11 +450,11 @@ describe('MessageProcessor with config', () => {
     // this might break, please adjust if you see a failure here
     expect(serializeRange(schemaDefs[0].range)).toEqual({
       start: {
-        line: 104 + offset,
+        line: 105 + offset,
         character: 0,
       },
       end: {
-        line: 112 + offset,
+        line: 113 + offset,
         character: 1,
       },
     });
diff --git a/packages/graphql-language-service/src/interface/__tests__/getAutocompleteSuggestions-test.ts b/packages/graphql-language-service/src/interface/__tests__/getAutocompleteSuggestions-test.ts
index 348c46a1f3..5d2507a0ef 100644
--- a/packages/graphql-language-service/src/interface/__tests__/getAutocompleteSuggestions-test.ts
+++ b/packages/graphql-language-service/src/interface/__tests__/getAutocompleteSuggestions-test.ts
@@ -704,14 +704,14 @@ describe('getAutocompleteSuggestions', () => {
 
     // TODO: decide if we want this. Discussing with @benjie, we might want to actually give the user flexibility here,
     // instead of being strict
-    // it('provides no more field suggestions once a oneOf field is chose and a user begins typing another field', () => {
-    //   expect(
-    //     testSuggestions(
-    //       '{ oneOfInputTypeTest(oneOf: { value: 2 d',
-    //       new Position(0, 40),
-    //     ),
-    //   ).toEqual([]);
-    // });
+    it('provides no more field suggestions once a oneOf field is chose and a user begins typing another field', () => {
+      expect(
+        testSuggestions(
+          '{ oneOfInputTypeTest(oneOf: { value: 2 d',
+          new Position(0, 40),
+        ),
+      ).toEqual([]);
+    });
 
     it('provides correct field name suggestion inside inline fragment', () => {
       expect(
diff --git a/packages/graphql-language-service/src/interface/getAutocompleteSuggestions.ts b/packages/graphql-language-service/src/interface/getAutocompleteSuggestions.ts
index 2c145eab21..83b5c7987f 100644
--- a/packages/graphql-language-service/src/interface/getAutocompleteSuggestions.ts
+++ b/packages/graphql-language-service/src/interface/getAutocompleteSuggestions.ts
@@ -315,6 +315,8 @@ export function getAutocompleteSuggestions(
     // @oneOf logic!
     console.log(state.prevState?.prevState?.kind, !!typeInfo.inputType);
     if (
+      typeInfo?.inputType &&
+      'isOneOf' in typeInfo.inputType &&
       typeInfo?.inputType?.isOneOf === true &&
       (state.prevState?.prevState?.kind !== 'Argument' || token.string !== '{')
     ) {
diff --git a/packages/graphql-language-service/src/parser/getTypeInfo.ts b/packages/graphql-language-service/src/parser/getTypeInfo.ts
index d2fb371513..656c301596 100644
--- a/packages/graphql-language-service/src/parser/getTypeInfo.ts
+++ b/packages/graphql-language-service/src/parser/getTypeInfo.ts
@@ -245,13 +245,14 @@ export function getTypeInfo(
             ? objectType.getFields()
             : null;
         inputType = objectType;
-        console.log(inputType);
         break;
       // TODO: needs tests
       case RuleKinds.OBJECT_FIELD:
         const objectField =
           state.name && objectFieldDefs ? objectFieldDefs[state.name] : null;
-        inputType = objectField?.type;
+        if (objectField?.type) {
+          inputType = objectField?.type;
+        }
         // @ts-expect-error
         fieldDef = objectField as GraphQLField<null, null>;
         type = fieldDef ? fieldDef.type : null;
diff --git a/packages/graphql-language-service/src/types.ts b/packages/graphql-language-service/src/types.ts
index 4b6e9f4280..52b77d843f 100644
--- a/packages/graphql-language-service/src/types.ts
+++ b/packages/graphql-language-service/src/types.ts
@@ -29,8 +29,6 @@ import type {
   GraphQLObjectType,
   GraphQLType,
   GraphQLDirective,
-  GraphQLInputType,
-  GraphQLInputObjectType,
 } from 'graphql';
 
 export type Maybe<T> = T | null | undefined;