diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 845df33..a7a0dab 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -7,8 +7,8 @@ on:
 
 jobs:
   build:
-    
     runs-on: macos-latest
+    
     steps:
       - uses: actions/checkout@v4
       - name: Select Xcode
diff --git a/JsonDecodeProtectionTests/ObjectProtectionTest.swift b/JsonDecodeProtectionTests/ObjectProtectionTest.swift
index cfa8080..079daab 100644
--- a/JsonDecodeProtectionTests/ObjectProtectionTest.swift
+++ b/JsonDecodeProtectionTests/ObjectProtectionTest.swift
@@ -21,13 +21,19 @@ struct SomeObject: Decodable
 
 extension SomeObject
 {
-    struct SubObject: Decodable
+    struct SubObject: Decodable, Equatable
     {
         private(set)
         var name: String?
         
         private(set)
         var number: Int?
+        
+        static
+        func == (lhs: SomeObject.SubObject, rhs: SomeObject.SubObject) -> Bool
+        {
+            lhs.name == rhs.name && lhs.number == rhs.number
+        }
     }
 }
 
@@ -90,4 +96,27 @@ final class ObjectProtectionTest: XCTestCase
         
         XCTAssertEqual(actual, expect)
     }
+    
+    func testObjectProtectionWithEmptyString() throws
+    {
+        // Arrange
+        self.jsonString = """
+        {
+            "subObjects": "",
+            "dices": "[1, 5, 1]"
+        }
+        """
+        
+        let jsonData: Data = self.jsonString.data(using: .utf8)!
+        let jsonDecoder = JSONDecoder()
+        
+        // Act
+        let object = try jsonDecoder.decode(SomeObject.self, from: jsonData)
+        
+        // Assert
+        let actual: Array<SomeObject.SubObject>? = object.subObjects
+        let expect: Array<SomeObject.SubObject>? = nil
+        
+        XCTAssertEqual(actual, expect)
+    }
 }
diff --git a/README.md b/README.md
index a22f684..dc16d65 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@
 
 * File > Swift Packages > Add Package Dependency
 * Add https://github.com/Darktt/JsonProtection
-* Select "Up to Next Major" with "1.2.0"
+* Select "Up to Next Major" with "1.2.1"
 
 ## 功能說明
 
diff --git a/SourceCode/JsonProtection/ObjectProtection.swift b/SourceCode/JsonProtection/ObjectProtection.swift
index 8c0a5a6..6fdf9de 100644
--- a/SourceCode/JsonProtection/ObjectProtection.swift
+++ b/SourceCode/JsonProtection/ObjectProtection.swift
@@ -88,7 +88,8 @@ extension ObjectProtection
 {
     func decode(with string: String) throws -> Value?
     {
-        guard let data: Data = string.data(using: .utf8) else {
+        guard !string.isEmpty,
+              let data: Data = string.data(using: .utf8) else {
             
             return nil
         }