diff --git a/app/src/main/java/com/example/nemophila/MyPageEditorActivity.java b/app/src/main/java/com/example/nemophila/MyPageEditorActivity.java
index cf6713f..093b82e 100644
--- a/app/src/main/java/com/example/nemophila/MyPageEditorActivity.java
+++ b/app/src/main/java/com/example/nemophila/MyPageEditorActivity.java
@@ -102,7 +102,6 @@
         changeDefaultButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                icon = null;
                 iconUrlString = "http://nitta-lab-www.is.konan-u.ac.jp/nemophila-data/test01.jpg";
                 setIcon(iconButton);
                 iconFlag = true;
@@ -232,6 +231,10 @@
                 InputStream is = con.getInputStream();
 
                 Bitmap bitmap = BitmapFactory.decodeStream(is);
+                ByteArrayOutputStream stream = new ByteArrayOutputStream();
+                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
+                byte[] byteArray = stream.toByteArray();
+                icon = Base64.getEncoder().encodeToString(byteArray);
                 handler.post(() -> iv.setImageBitmap(bitmap));
                 is.close();
                 con.disconnect();