diff --git a/pkg/apiserver/server.go b/pkg/apiserver/server.go
index a850fbd..24cb3fd 100644
--- a/pkg/apiserver/server.go
+++ b/pkg/apiserver/server.go
@@ -67,7 +67,7 @@ func Start(params APIServerParams) {
 	r.HandleFunc("/api/v1/app/updates", handlers.GetAppUpdates).Methods("GET")
 	r.HandleFunc("/api/v1/app/history", handlers.GetAppHistory).Methods("GET")
 	r.HandleFunc("/api/v1/app/custom-metrics", handlers.SendCustomAppMetrics).Methods("POST", "PATCH")
-	r.HandleFunc("/api/v1/app/custom-metrics/:key", handlers.SendCustomAppMetrics).Methods("DELETE")
+	r.HandleFunc("/api/v1/app/custom-metrics/{key}", handlers.DeleteCustomAppMetricsKey).Methods("DELETE")
 	r.HandleFunc("/api/v1/app/instance-tags", handlers.SendAppInstanceTags).Methods("POST")
 
 	// integration
diff --git a/pkg/handlers/app.go b/pkg/handlers/app.go
index e226110..62d9f58 100644
--- a/pkg/handlers/app.go
+++ b/pkg/handlers/app.go
@@ -9,6 +9,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/gorilla/mux"
 	"github.com/pkg/errors"
 	appstatetypes "github.com/replicatedhq/replicated-sdk/pkg/appstate/types"
 	"github.com/replicatedhq/replicated-sdk/pkg/config"
@@ -388,9 +389,9 @@ func SendCustomAppMetrics(w http.ResponseWriter, r *http.Request) {
 }
 
 func DeleteCustomAppMetricsKey(w http.ResponseWriter, r *http.Request) {
-	key := r.PathValue("key")
+	key, ok := mux.Vars(r)["key"]
 
-	if key == "" {
+	if !ok || key == "" {
 		w.WriteHeader(http.StatusBadRequest)
 		fmt.Fprintf(w, "key cannot be empty")
 		logger.Errorf("cannot delete custom metrics key - key cannot be empty")
@@ -406,7 +407,7 @@ func DeleteCustomAppMetricsKey(w http.ResponseWriter, r *http.Request) {
 
 	data := map[string]interface{}{key: nil}
 
-	if err := report.SendCustomAppMetrics(clientset, store.GetStore(), data); err != nil {
+	if err := report.SendCustomAppMetrics(clientset, store.GetStore(), data, false); err != nil {
 		logger.Error(errors.Wrapf(err, "failed to delete custom merics key: %s", key))
 		w.WriteHeader(http.StatusBadRequest)
 		return