diff --git a/src/pkg/http/request.go b/src/pkg/http/request.go
index 353b1c62c91..05d4892110c 100644
--- a/src/pkg/http/request.go
+++ b/src/pkg/http/request.go
@@ -276,9 +276,7 @@ func (req *Request) write(w io.Writer, usingProxy bool) os.Error {
 	fmt.Fprintf(w, "%s %s HTTP/1.1\r\n", valueOrDefault(req.Method, "GET"), uri)
 
 	// Header lines
-	if !usingProxy {
-		fmt.Fprintf(w, "Host: %s\r\n", host)
-	}
+	fmt.Fprintf(w, "Host: %s\r\n", host)
 	fmt.Fprintf(w, "User-Agent: %s\r\n", valueOrDefault(req.UserAgent, defaultUserAgent))
 	if req.Referer != "" {
 		fmt.Fprintf(w, "Referer: %s\r\n", req.Referer)
diff --git a/src/pkg/http/requestwrite_test.go b/src/pkg/http/requestwrite_test.go
index bb000c701ff..beb51fb8d75 100644
--- a/src/pkg/http/requestwrite_test.go
+++ b/src/pkg/http/requestwrite_test.go
@@ -69,6 +69,7 @@ var reqWriteTests = []reqWriteTest{
 			"Proxy-Connection: keep-alive\r\n\r\n",
 
 		"GET http://www.techcrunch.com/ HTTP/1.1\r\n" +
+			"Host: www.techcrunch.com\r\n" +
 			"User-Agent: Fake\r\n" +
 			"Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n" +
 			"Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n" +
@@ -101,6 +102,7 @@ var reqWriteTests = []reqWriteTest{
 			"6\r\nabcdef\r\n0\r\n\r\n",
 
 		"GET http://www.google.com/search HTTP/1.1\r\n" +
+			"Host: www.google.com\r\n" +
 			"User-Agent: Go http package\r\n" +
 			"Transfer-Encoding: chunked\r\n\r\n" +
 			"6\r\nabcdef\r\n0\r\n\r\n",
@@ -131,6 +133,7 @@ var reqWriteTests = []reqWriteTest{
 			"6\r\nabcdef\r\n0\r\n\r\n",
 
 		"POST http://www.google.com/search HTTP/1.1\r\n" +
+			"Host: www.google.com\r\n" +
 			"User-Agent: Go http package\r\n" +
 			"Connection: close\r\n" +
 			"Transfer-Encoding: chunked\r\n\r\n" +
@@ -164,6 +167,7 @@ var reqWriteTests = []reqWriteTest{
 			"abcdef",
 
 		"POST http://www.google.com/search HTTP/1.1\r\n" +
+			"Host: www.google.com\r\n" +
 			"User-Agent: Go http package\r\n" +
 			"Connection: close\r\n" +
 			"Content-Length: 6\r\n" +
@@ -188,6 +192,7 @@ var reqWriteTests = []reqWriteTest{
 
 		// Looks weird but RawURL overrides what WriteProxy would choose.
 		"GET /search HTTP/1.1\r\n" +
+			"Host: www.google.com\r\n" +
 			"User-Agent: Go http package\r\n" +
 			"\r\n",
 	},