diff --git a/libsession/src/main/java/org/session/libsession/messaging/messages/control/ClosedGroupControlMessage.kt b/libsession/src/main/java/org/session/libsession/messaging/messages/control/ClosedGroupControlMessage.kt
index 14ecbf4f0f..7654f6ce9a 100644
--- a/libsession/src/main/java/org/session/libsession/messaging/messages/control/ClosedGroupControlMessage.kt
+++ b/libsession/src/main/java/org/session/libsession/messaging/messages/control/ClosedGroupControlMessage.kt
@@ -6,6 +6,7 @@ import org.session.libsignal.libsignal.ecc.DjbECPublicKey
 import org.session.libsignal.libsignal.ecc.ECKeyPair
 import org.session.libsignal.service.internal.push.SignalServiceProtos
 import org.session.libsignal.service.internal.push.SignalServiceProtos.DataMessage
+import org.session.libsignal.service.loki.utilities.removing05PrefixIfNeeded
 import org.session.libsignal.service.loki.utilities.toHexString
 import org.session.libsignal.utilities.Hex
 import org.session.libsignal.utilities.logging.Log
@@ -141,7 +142,7 @@ class ClosedGroupControlMessage() : ControlMessage() {
                     closedGroupControlMessage.publicKey = kind.publicKey
                     closedGroupControlMessage.name = kind.name
                     val encryptionKeyPairAsProto = SignalServiceProtos.KeyPair.newBuilder()
-                    encryptionKeyPairAsProto.publicKey = ByteString.copyFrom(kind.encryptionKeyPair.publicKey.serialize())
+                    encryptionKeyPairAsProto.publicKey = ByteString.copyFrom(kind.encryptionKeyPair.publicKey.serialize().removing05PrefixIfNeeded())
                     encryptionKeyPairAsProto.privateKey = ByteString.copyFrom(kind.encryptionKeyPair.privateKey.serialize())
 
                     try {
diff --git a/libsession/src/main/java/org/session/libsession/messaging/sending_receiving/MessageSenderClosedGroup.kt b/libsession/src/main/java/org/session/libsession/messaging/sending_receiving/MessageSenderClosedGroup.kt
index 8f49045ed8..78d5b25e98 100644
--- a/libsession/src/main/java/org/session/libsession/messaging/sending_receiving/MessageSenderClosedGroup.kt
+++ b/libsession/src/main/java/org/session/libsession/messaging/sending_receiving/MessageSenderClosedGroup.kt
@@ -286,7 +286,7 @@ fun MessageSender.sendLatestEncryptionKeyPair(publicKey: String, groupPublicKey:
             ?: storage.getLatestClosedGroupEncryptionKeyPair(groupPublicKey) ?: return
     // Send it
     val proto = SignalServiceProtos.KeyPair.newBuilder()
-    proto.publicKey = ByteString.copyFrom(encryptionKeyPair.publicKey.serialize())
+    proto.publicKey = ByteString.copyFrom(encryptionKeyPair.publicKey.serialize().removing05PrefixIfNeeded())
     proto.privateKey = ByteString.copyFrom(encryptionKeyPair.privateKey.serialize())
     val plaintext = proto.build().toByteArray()
     val ciphertext = MessageSenderEncryption.encryptWithSessionProtocol(plaintext, publicKey)