diff --git a/internal/ingress/controller/parser/kongstate/consumer.go b/internal/ingress/controller/parser/kongstate/consumer.go
index f762252..12ee3a0 100644
--- a/internal/ingress/controller/parser/kongstate/consumer.go
+++ b/internal/ingress/controller/parser/kongstate/consumer.go
@@ -40,7 +40,7 @@ func (c *Consumer) SetCredential(log logrus.FieldLogger, credType string, credCo
 		// See https://github.com/Kong/deck/pull/223 and https://github.com/Kong/kubernetes-ingress-controller/issues/532
 		// for more discussion.
 		if cred.Key == nil {
-			return fmt.Errorf("key-auth for consumer %s is invalid: no key", *c.Username)
+			return fmt.Errorf("key-auth for consumer is invalid: no key")
 		}
 		c.KeyAuths = append(c.KeyAuths, &cred)
 	case "basic-auth", "basicauth_credential":
diff --git a/internal/ingress/controller/parser/kongstate/consumer_test.go b/internal/ingress/controller/parser/kongstate/consumer_test.go
index 88b5a6c..08d9380 100644
--- a/internal/ingress/controller/parser/kongstate/consumer_test.go
+++ b/internal/ingress/controller/parser/kongstate/consumer_test.go
@@ -46,6 +46,16 @@ func TestConsumer_SetCredential(t *testing.T) {
 			},
 			wantErr: false,
 		},
+		{
+			name: "key-auth without key",
+			args: args{
+				credType:   "key-auth",
+				consumer:   &Consumer{},
+				credConfig: map[string]string{},
+			},
+			result:  &Consumer{},
+			wantErr: true,
+		},
 		{
 			name: "keyauth_credential",
 			args: args{