diff --git a/src/httpserver.cpp b/src/httpserver.cpp
--- a/src/httpserver.cpp
+++ b/src/httpserver.cpp
@@ -249,7 +249,7 @@
         LogPrint(BCLog::HTTP,
                  "HTTP request from %s rejected: Unknown HTTP request method\n",
                  hreq->GetPeer().ToString());
-        hreq->WriteReply(HTTP_BADMETHOD);
+        hreq->WriteReply(HTTP_BAD_METHOD);
         return;
     }
 
@@ -288,10 +288,11 @@
             LogPrintf("WARNING: request rejected because http work queue depth "
                       "exceeded, it can be increased with the -rpcworkqueue= "
                       "setting\n");
-            item->req->WriteReply(HTTP_INTERNAL, "Work queue depth exceeded");
+            item->req->WriteReply(HTTP_INTERNAL_SERVER_ERROR,
+                                  "Work queue depth exceeded");
         }
     } else {
-        hreq->WriteReply(HTTP_NOTFOUND);
+        hreq->WriteReply(HTTP_NOT_FOUND);
     }
 }
 
@@ -554,7 +555,7 @@
     if (!replySent) {
         // Keep track of whether reply was sent to avoid request leaks
         LogPrintf("%s: Unhandled request\n", __func__);
-        WriteReply(HTTP_INTERNAL, "Unhandled request");
+        WriteReply(HTTP_INTERNAL_SERVER_ERROR, "Unhandled request");
     }
     // evhttpd cleans up the request, as long as a reply was sent.
 }