diff --git a/src/BufferedImageWrapper.java b/src/BufferedImageWrapper.java
index 9d7aae4..dfc96aa 100644
--- a/src/BufferedImageWrapper.java
+++ b/src/BufferedImageWrapper.java
@@ -57,7 +57,7 @@ public class BufferedImageWrapper implements Serializable {
 
     // custom writeObject method that allows writing an otherwise unserializable method to disk
     @Serial
-    public void writeObject(ObjectOutputStream out) throws IOException {
+    private void writeObject(ObjectOutputStream out) throws IOException {
         // save whether the image is flipped
         out.writeObject(flipImage);
         // if the imageString is present, write that to disk to prevent excessive disk writes
@@ -70,7 +70,7 @@ public class BufferedImageWrapper implements Serializable {
 
     // custom readObject method that allows reading an otherwise unserializable method from disk
     @Serial
-    public void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
+    private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
         Object o;
         // read whether the image is flipped or not
         flipImage = (Boolean)in.readObject();
diff --git a/src/SoundWrapper.java b/src/SoundWrapper.java
index a2f48db..db89c74 100644
--- a/src/SoundWrapper.java
+++ b/src/SoundWrapper.java
@@ -21,13 +21,13 @@ public class SoundWrapper implements Serializable {
     public SoundWrapper() {}
 
     @Serial
-    public void writeObject(ObjectOutputStream out) throws IOException {
+    private void writeObject(ObjectOutputStream out) throws IOException {
         // write location of .wav file (soundString)
         out.writeObject(soundString);
     }
 
     @Serial
-    public void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException, UnsupportedAudioFileException, LineUnavailableException {
+    private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException, UnsupportedAudioFileException, LineUnavailableException {
         // read .wav file located at soundString
         Object o;
         o = in.readObject();