diff --git a/plugins/typescript/src/core/schemaToTypeAliasDeclaration.test.ts b/plugins/typescript/src/core/schemaToTypeAliasDeclaration.test.ts
index b91da60..0b62daf 100644
--- a/plugins/typescript/src/core/schemaToTypeAliasDeclaration.test.ts
+++ b/plugins/typescript/src/core/schemaToTypeAliasDeclaration.test.ts
@@ -628,9 +628,9 @@ describe("schemaToTypeAliasDeclaration", () => {
           { type: "object", properties: { bar: { type: "number" } } },
         ],
         properties: {
-          foobar: {type: "string"}
+          foobar: { type: "string" },
         },
-        required: ['foo', 'foobar']
+        required: ["foo", "foobar"],
       };
 
       expect(printSchema(schema)).toMatchInlineSnapshot(`
@@ -641,7 +641,7 @@ describe("schemaToTypeAliasDeclaration", () => {
       };"
     `);
     });
-    
+
     it("should combine additionalProperties and allOf", () => {
       const schema: SchemaObject = {
         allOf: [
@@ -649,8 +649,8 @@ describe("schemaToTypeAliasDeclaration", () => {
           { type: "object", properties: { bar: { type: "number" } } },
         ],
         additionalProperties: {
-          type: "string"
-        }
+          type: "string",
+        },
       };
 
       expect(printSchema(schema)).toMatchInlineSnapshot(`
@@ -662,7 +662,7 @@ describe("schemaToTypeAliasDeclaration", () => {
       };"
     `);
     });
-    
+
     it("should combine properties & additionalProperties & allOf", () => {
       const schema: SchemaObject = {
         allOf: [
@@ -670,12 +670,12 @@ describe("schemaToTypeAliasDeclaration", () => {
           { type: "object", properties: { bar: { type: "number" } } },
         ],
         additionalProperties: {
-          type: "string"
+          type: "string",
         },
         properties: {
-          foobar: {type: "string"}
+          foobar: { type: "string" },
         },
-        required: ['bar', 'foobar']
+        required: ["bar", "foobar"],
       };
 
       expect(printSchema(schema)).toMatchInlineSnapshot(`
@@ -689,6 +689,23 @@ describe("schemaToTypeAliasDeclaration", () => {
     `);
     });
 
+    it("should combine nullable & allOf", () => {
+      const schema: SchemaObject = {
+        allOf: [
+          { type: "object", properties: { foo: { type: "string" } } },
+          { type: "object", properties: { bar: { type: "number" } } },
+        ],
+        nullable: true,
+      };
+
+      expect(printSchema(schema)).toMatchInlineSnapshot(`
+      "export type Test = {
+          foo?: string;
+          bar?: number;
+      } | null;"
+    `);
+    });
+
     it("should combine inline types", () => {
       const schema: SchemaObject = {
         allOf: [
diff --git a/plugins/typescript/src/core/schemaToTypeAliasDeclaration.ts b/plugins/typescript/src/core/schemaToTypeAliasDeclaration.ts
index cef9042..6a68c70 100644
--- a/plugins/typescript/src/core/schemaToTypeAliasDeclaration.ts
+++ b/plugins/typescript/src/core/schemaToTypeAliasDeclaration.ts
@@ -142,10 +142,13 @@ export const getType = (
         additionalProperties: schema.additionalProperties
       });
     }
-    return getAllOf([
-      ...schema.allOf,
-      ...adHocSchemas
-     ], context);
+    return f.createUnionTypeNode([
+      getAllOf([
+        ...schema.allOf,
+        ...adHocSchemas
+      ], context),
+      ...(schema.nullable ? [f.createLiteralTypeNode(f.createNull())] : []),
+    ]);
   }
 
   if (schema.enum) {