1 files changed, 1 insertions, 1 deletions
diff --git a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/HttpUploadRequestSlotPacketGenerator.java b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/HttpUploadRequestSlotPacketGenerator.java
index 915cf9a7..cdb957c4 100644
--- a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/HttpUploadRequestSlotPacketGenerator.java
+++ b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/HttpUploadRequestSlotPacketGenerator.java
@@ -33,7 +33,7 @@ public final class HttpUploadRequestSlotPacketGenerator {
     public static IqPacket generate(Jid host, String filename, long filesize, String mime) {
         SlotRequestPacket packet = new SlotRequestPacket(filename, filesize);
         packet.setTo(host);
-        packet.setMime((mime == null) ? HttpUpload.DEFAULT_MIME_TYPE : mime);
+        packet.setMime((mime == null || mime.isEmpty()) ? HttpUpload.DEFAULT_MIME_TYPE : mime);
         return packet;
     }