diff --git a/config.def.h b/config.def.h
index 200a343..61c83df 100644
--- a/config.def.h
+++ b/config.def.h
@@ -50,6 +50,7 @@ static const Rule rules[] = {
     {"Nextcloud",               NULL,       NULL,           1 << 8,     1,          0,          -1,         0},
     {"feishin",                 NULL,       NULL,           1 << 2,     0,          0,          -1,         0},
     {"discord",                 NULL,       NULL,           1 << 2,     1,          0,          -1,         0},
+    {"telegram-desktop",        NULL,       NULL,           1 << 2,     1,          0,          -1,         0},
 	{ NULL,                     NULL,       "scratchpad",   0,          1,          0,          -1,         's'}
 };