diff --git a/include/http.h b/include/http.h
index bfe7a8c..435e2dd 100644
--- a/include/http.h
+++ b/include/http.h
@@ -10,6 +10,8 @@
 
 extern const char http_404[];
 extern const size_t http_404_len;
+extern const char http_405[];
+extern const size_t http_405_len;
 extern const char http_500[];
 extern const size_t http_500_len;
 
@@ -24,4 +26,12 @@ http_parse_error http_parse_request(http_request *req, const char *path,
 
 void http_route(event_loop_conn *conn);
 
+typedef enum http_response_type {
+  http_not_found = 404,
+  http_method_not_allowed = 405
+} http_response_type;
+
+void http_write_standard_response(event_loop_conn *conn,
+                                  http_response_type type);
+
 #endif
diff --git a/src/http/http_consts.c b/src/http/http_consts.c
index b84fba5..b929c6d 100644
--- a/src/http/http_consts.c
+++ b/src/http/http_consts.c
@@ -5,6 +5,11 @@ const char http_404[] = "HTTP/1.1 404 Not Found\n"
                         "Content-Length: 0\n\n";
 const size_t http_404_len = sizeof(http_404) - 1;
 
+const char http_405[] = "HTTP/1.1 405 Method Not Allowed\n"
+                        "Connection: close\n"
+                        "Content-Length: 0\n\n";
+const size_t http_405_len = sizeof(http_405) - 1;
+
 const char http_500[] = "HTTP/1.1 500 Internal Server Error\n"
                         "Connection: close\n"
                         "Content-Length: 0\n\n";
diff --git a/src/http/http_route.c b/src/http/http_route.c
index 38627a6..cbd5f49 100644
--- a/src/http/http_route.c
+++ b/src/http/http_route.c
@@ -9,9 +9,5 @@ void http_route(event_loop_conn *conn) {
   // TODO routing
 
   // Fallthrough is to return a 404
-  memcpy(conn->wbuf, http_404, http_404_len);
-
-  conn->state = event_loop_conn_state_res;
-  conn->wbuf_size = http_404_len;
-  conn->wbuf_sent = 0;
+  http_write_standard_response(conn, http_not_found);
 }
diff --git a/src/http/http_util.c b/src/http/http_util.c
new file mode 100644
index 0000000..4b916e7
--- /dev/null
+++ b/src/http/http_util.c
@@ -0,0 +1,23 @@
+#include "http.h"
+
+void http_write_standard_response(event_loop_conn *conn,
+                                  http_response_type type) {
+  const char *s;
+  size_t len;
+
+  switch (type) {
+  case 404:
+    s = http_404;
+    len = http_404_len;
+    break;
+  case 405:
+    s = http_405;
+    len = http_405_len;
+  }
+
+  memcpy(conn->wbuf, s, len);
+
+  conn->state = event_loop_conn_state_res;
+  conn->wbuf_size = len;
+  conn->wbuf_sent = 0;
+}