diff --git a/config.def.h b/config.def.h
index 61c83df..85669ef 100644
--- a/config.def.h
+++ b/config.def.h
@@ -51,6 +51,7 @@ static const Rule rules[] = {
     {"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},
+    {"TelegramDesktop",         NULL,       NULL,           1 << 2,     1,          0,          -1,         0},
 	{ NULL,                     NULL,       "scratchpad",   0,          1,          0,          -1,         's'}
 };