diff --git a/routers/web/web.go b/routers/web/web.go
index ee9694f41c..f55b8d6f62 100644
--- a/routers/web/web.go
+++ b/routers/web/web.go
@@ -57,6 +57,10 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 )
 
+func endpointNotImplemented(ctx *context.Context) {
+	ctx.JSON(http.StatusNotImplemented, "This endpoint has been removed due to performance issues with it and as such is not longer implemented.")
+}
+
 // optionsCorsHandler return a http handler which sets CORS options if enabled by config, it blocks non-CORS OPTIONS requests.
 func optionsCorsHandler() func(next http.Handler) http.Handler {
 	var corsHandler func(next http.Handler) http.Handler
@@ -1425,15 +1429,15 @@ func registerRoutes(m *web.Route) {
 			m.Get("/{period}", repo.Activity)
 			m.Group("/contributors", func() {
 				m.Get("", repo.Contributors)
-				m.Get("/data", repo.ContributorsData)
+				m.Get("/data", endpointNotImplemented)
 			}, repo.MustBeNotEmpty, context.RequireRepoReaderOr(unit.TypeCode))
 			m.Group("/code-frequency", func() {
 				m.Get("", repo.CodeFrequency)
-				m.Get("/data", repo.CodeFrequencyData)
+				m.Get("/data", endpointNotImplemented)
 			}, repo.MustBeNotEmpty, context.RequireRepoReaderOr(unit.TypeCode))
 			m.Group("/recent-commits", func() {
 				m.Get("", repo.RecentCommits)
-				m.Get("/data", repo.RecentCommitsData)
+				m.Get("/data", endpointNotImplemented)
 			}, repo.MustBeNotEmpty, context.RequireRepoReaderOr(unit.TypeCode))
 		}, context.RepoRef(), context.RequireRepoReaderOr(unit.TypeCode, unit.TypePullRequests, unit.TypeIssues, unit.TypeReleases))