diff --git a/lib/Mnemosyne/Webhook.pm b/lib/Mnemosyne/Webhook.pm
index a5ef20e..f2e7767 100644
--- a/lib/Mnemosyne/Webhook.pm
+++ b/lib/Mnemosyne/Webhook.pm
@@ -3,6 +3,7 @@ use strict;
 use warnings;
 use utf8;
 use DateTime;
+use Mojo::JSON qw(encode_json);
 use Mnemosyne::Task;
 use Mnemosyne::Digest;
 use Mnemosyne::Schedule;
@@ -31,6 +32,8 @@ sub handle_update {
         return;
     }
 
+    warn "DBG full_update: " . encode_json($update) . "\n";
+
     my $upd_type = exists $update->{message}       ? 'message'
                  : exists $update->{callback_query} ? 'callback_query'
                  : 'unknown';
@@ -51,6 +54,9 @@ sub _handle_message {
     my ($msg, $chat_id, $db, $config, $telegram) = @_;
     my $text = $msg->{text} // '';
 
+    # Non-text messages (photos, stickers, voice, accidental empty sends, etc.)
+    return unless length $text;
+
     # Strip bot username suffix from commands (e.g. /help@MnemosyneBot)
     $text =~ s{^(/\w+)@\w+}{$1};