diff --git a/src/util.cc b/src/util.cc
index c6515c25..3e21628d 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -1147,31 +1147,6 @@ std::string dtos(double n) {
   return utos(static_cast<int64_t>(n)) + "." + (f.size() == 1 ? "0" : "") + f;
 }
 
-std::string make_http_hostport(const StringRef &host, uint16_t port) {
-  if (port != 80 && port != 443) {
-    return make_hostport(host, port);
-  }
-
-  auto ipv6 = ipv6_numeric_addr(host.c_str());
-
-  std::string hostport;
-  hostport.resize(host.size() + (ipv6 ? 2 : 0));
-
-  auto p = &hostport[0];
-
-  if (ipv6) {
-    *p++ = '[';
-  }
-
-  p = std::copy_n(host.c_str(), host.size(), p);
-
-  if (ipv6) {
-    *p++ = ']';
-  }
-
-  return hostport;
-}
-
 StringRef make_http_hostport(BlockAllocator &balloc, const StringRef &host,
                              uint16_t port) {
   if (port != 80 && port != 443) {
@@ -1244,7 +1219,7 @@ StringRef make_hostport(BlockAllocator &balloc, const StringRef &host,
 
   *p++ = ':';
 
-  std::copy(std::begin(serv), std::end(serv), p);
+  p = std::copy(std::begin(serv), std::end(serv), p);
 
   *p = '\0';
 
diff --git a/src/util.h b/src/util.h
index 95239ab8..40d95348 100644
--- a/src/util.h
+++ b/src/util.h
@@ -633,8 +633,6 @@ std::string format_duration(double t);
 // Creates "host:port" string using given |host| and |port|.  If
 // |host| is numeric IPv6 address (e.g., ::1), it is enclosed by "["
 // and "]".  If |port| is 80 or 443, port part is omitted.
-std::string make_http_hostport(const StringRef &host, uint16_t port);
-
 StringRef make_http_hostport(BlockAllocator &balloc, const StringRef &host,
                              uint16_t port);
 
diff --git a/src/util_test.cc b/src/util_test.cc
index d9bce306..c8934402 100644
--- a/src/util_test.cc
+++ b/src/util_test.cc
@@ -502,12 +502,15 @@ void test_util_parse_config_str_list(void) {
 }
 
 void test_util_make_http_hostport(void) {
-  CU_ASSERT("localhost" ==
-            util::make_http_hostport(StringRef::from_lit("localhost"), 80));
+  BlockAllocator balloc(4096, 4096);
+
+  CU_ASSERT("localhost" == util::make_http_hostport(
+                               balloc, StringRef::from_lit("localhost"), 80));
   CU_ASSERT("[::1]" ==
-            util::make_http_hostport(StringRef::from_lit("::1"), 443));
-  CU_ASSERT("localhost:3000" ==
-            util::make_http_hostport(StringRef::from_lit("localhost"), 3000));
+            util::make_http_hostport(balloc, StringRef::from_lit("::1"), 443));
+  CU_ASSERT(
+      "localhost:3000" ==
+      util::make_http_hostport(balloc, StringRef::from_lit("localhost"), 3000));
 }
 
 void test_util_make_hostport(void) {
@@ -515,6 +518,12 @@ void test_util_make_hostport(void) {
             util::make_hostport(StringRef::from_lit("localhost"), 80));
   CU_ASSERT("[::1]:443" ==
             util::make_hostport(StringRef::from_lit("::1"), 443));
+
+  BlockAllocator balloc(4096, 4096);
+  CU_ASSERT("localhost:80" ==
+            util::make_hostport(balloc, StringRef::from_lit("localhost"), 80));
+  CU_ASSERT("[::1]:443" ==
+            util::make_hostport(balloc, StringRef::from_lit("::1"), 443));
 }
 
 void test_util_strifind(void) {