diff --git a/symbols/vn b/symbols/vn
index 1a002e6..293c38a 100644
--- a/symbols/vn
+++ b/symbols/vn
@@ -15,7 +15,6 @@ xkb_symbols "basic" {
 
     name[Group1]= "Vietnamese";
 
-    key <TLDE> { [	   grave, 	asciitilde	] };
     key <AE01> { [	   abreve,	Abreve		] };
     key <AE02> { [	   acircumflex,  Acircumflex	] };
     key <AE03> { [	   ecircumflex,	Ecircumflex	] };
@@ -26,7 +25,6 @@ xkb_symbols "basic" {
     key <AE08> { [	   0x1000301,	asterisk,	dead_acute,	asterisk	] };
     key <AE09> { [	   0x1000323,	parenleft,	dead_belowdot,	parenleft	] };
     key <AE10> { [	   dstroke,	Dstroke		] };
-    key <AE11> { [     minus, underscore  ]	};
     key <AE12> { [     DongSign, plus ]	};
 
     key <AD11> { [ uhorn,	Uhorn	] };