diff --git a/service/src/main/java/org/whispersystems/textsecuregcm/entities/MultiRecipientMessage.java b/service/src/main/java/org/whispersystems/textsecuregcm/entities/MultiRecipientMessage.java
index 564d007f4..eccd1e97d 100644
--- a/service/src/main/java/org/whispersystems/textsecuregcm/entities/MultiRecipientMessage.java
+++ b/service/src/main/java/org/whispersystems/textsecuregcm/entities/MultiRecipientMessage.java
@@ -61,7 +61,7 @@ public class MultiRecipientMessage {
   private final Recipient[] recipients;
 
   @NotNull
-  @Min(32)
+  @Size(min = 32)
   private final byte[] commonPayload;
 
   public MultiRecipientMessage(Recipient[] recipients, byte[] commonPayload) {