diff --git a/src/bindx/BindxExt.hx b/src/bindx/BindxExt.hx
index d8e5570..d5d1443 100644
--- a/src/bindx/BindxExt.hx
+++ b/src/bindx/BindxExt.hx
@@ -32,20 +32,20 @@ typedef Chain = {
 @:access(bindx.BindMacros)
 class BindExt {
     
-    @:noUsing macro static public function expr(expr:Expr, listener:Expr):Expr {
+    @:noUsing macro static public function expr<T>(expr:ExprOf<T>, listener:ExprOf<Null<T>->Null<T>->Void>):ExprOf<Void->Void> {
         return internalBindExpr(expr, listener);
     }
     
-    @:noUsing macro static public function exprTo(expr:Expr, target:Expr):Expr {
+    @:noUsing macro static public function exprTo<T>(expr:ExprOf<T>, target:ExprOf<T>):ExprOf<Void->Void> {
         var type = Context.typeof(expr).toComplexType();
         return internalBindExpr(expr, macro function (_, to:Null<$type>) $target = to);
     }
     
-    @:noUsing macro static public function chain(expr:Expr, listener:Expr):Expr {
+    @:noUsing macro static public function chain<T>(expr:ExprOf<T>, listener:ExprOf<Null<T>->Null<T>->Void>):ExprOf<Void->Void> {
         return internalBindChain(expr, listener);
     }
     
-    @:noUsing macro static public function chainTo(expr:Expr, target:Expr):Expr {
+    @:noUsing macro static public function chainTo<T>(expr:ExprOf<T>, target:ExprOf<T>):ExprOf<Void->Void> {
         var type = Context.typeof(expr).toComplexType();
         return internalBindChain(expr, macro function (_, to:Null<$type>) $target = to);
     }