diff --git a/internal/acl/matcher.go b/internal/acl/matcher.go
index 19022c3..b19daf8 100644
--- a/internal/acl/matcher.go
+++ b/internal/acl/matcher.go
@@ -1,7 +1,6 @@
 package acl
 
 import (
-	"errors"
 	"net"
 	"strings"
 
@@ -37,9 +36,9 @@ var errMatcherFormat = gperr.Multiline().AddLines(
 )
 
 var (
-	errSyntax      = errors.New("syntax error")
-	errInvalidIP   = errors.New("invalid IP")
-	errInvalidCIDR = errors.New("invalid CIDR")
+	errSyntax      = gperr.New("syntax error")
+	errInvalidIP   = gperr.New("invalid IP")
+	errInvalidCIDR = gperr.New("invalid CIDR")
 )
 
 func (matcher *Matcher) Parse(s string) error {
diff --git a/internal/gperr/subject.go b/internal/gperr/subject.go
index 3a336f0..1d36293 100644
--- a/internal/gperr/subject.go
+++ b/internal/gperr/subject.go
@@ -136,6 +136,9 @@ func (err *withSubject) MarshalJSON() ([]byte, error) {
 		Subjects: subjects,
 		Err:      err.Err,
 	}
+	if err.pendingSubject != "" {
+		reversed.Subjects = append(reversed.Subjects, err.pendingSubject)
+	}
 
 	return json.Marshal(reversed)
 }
diff --git a/internal/watcher/health/monitor/monitor.go b/internal/watcher/health/monitor/monitor.go
index 1d33491..73cc97d 100644
--- a/internal/watcher/health/monitor/monitor.go
+++ b/internal/watcher/health/monitor/monitor.go
@@ -35,7 +35,7 @@ type (
 	}
 )
 
-var ErrNegativeInterval = errors.New("negative interval")
+var ErrNegativeInterval = gperr.New("negative interval")
 
 func NewMonitor(r routes.Route) health.HealthMonCheck {
 	var mon health.HealthMonCheck