diff --git a/app/src/main/java/eu/faircode/email/ImageHelper.java b/app/src/main/java/eu/faircode/email/ImageHelper.java
index 9928d9cfce..d36ba6fe73 100644
--- a/app/src/main/java/eu/faircode/email/ImageHelper.java
+++ b/app/src/main/java/eu/faircode/email/ImageHelper.java
@@ -216,7 +216,7 @@ class ImageHelper {
 
     static byte[] getHash(String email) {
         try {
-            return MessageDigest.getInstance("MD5").digest(email.getBytes());
+            return MessageDigest.getInstance("SHA256").digest(email.getBytes());
         } catch (NoSuchAlgorithmException ignored) {
             return email.getBytes();
         }