diff --git a/src/core.js b/src/core.js
index d926ffd..b82f097 100644
--- a/src/core.js
+++ b/src/core.js
@@ -1291,7 +1291,7 @@ $.extend( $.validator, {
 			}
 
 			var previous = this.previousValue( element ),
-				validator, data;
+				validator, data, optionDataString;
 
 			if (!this.settings.messages[ element.name ] ) {
 				this.settings.messages[ element.name ] = {};
@@ -1300,12 +1300,12 @@ $.extend( $.validator, {
 			this.settings.messages[ element.name ].remote = previous.message;
 
 			param = typeof param === "string" && { url: param } || param;
-
-			if ( previous.old === value ) {
+			optionDataString = $.param( $.extend( { data: value }, param.data ) );
+			if (previous.old === optionDataString) {
 				return previous.valid;
 			}
 
-			previous.old = value;
+			previous.old = optionDataString;
 			validator = this;
 			this.startRequest( element );
 			data = {};
diff --git a/test/methods.js b/test/methods.js
index c049884..663d9fd 100644
--- a/test/methods.js
+++ b/test/methods.js
@@ -470,6 +470,42 @@ asyncTest("remote extensions", function() {
 	strictEqual( v.element(e), true, "still invalid, because remote validation must block until it returns; dependency-mismatch considered as valid though" );
 });
 
+test("remote, data previous querystring", function() {
+	expect(4);
+	var change = true,
+		e = $("#username"),
+		v = $("#userForm").validate({
+			rules: {
+				username: {
+					required: true,
+					remote: {
+						url: "users.php",
+						type: "POST",
+						data: {
+							email: function() {
+								if ( change ) {
+									change = false;
+									return "email.com";
+								}
+								return "email2.com";
+							}
+						},
+						beforeSend: function(request, settings) {
+							if ( change ) {
+								deepEqual(settings.data, "username=asdf&email=email.com");
+							} else {
+								deepEqual(settings.data, "username=asdf&email=email2.com");
+							}
+						}
+					}
+				}
+			}
+		});
+	$("#username").val("asdf");
+	strictEqual( v.element(e), true, "new email value (email.com), new request; dependency-mismatch considered as valid though" );
+	strictEqual( v.element(e), true, "new email value (email2.com), new request; dependency-mismatch considered as valid though" );
+});
+
 module("additional methods");
 
 test("phone (us)", function() {