diff --git a/examples/gno.land/r/leon/config/config.gno b/examples/gno.land/r/leon/config/config.gno
index cbc1e537e3f..bc800ec8263 100644
--- a/examples/gno.land/r/leon/config/config.gno
+++ b/examples/gno.land/r/leon/config/config.gno
@@ -8,6 +8,9 @@ import (
 var (
 	main   std.Address // leon's main address
 	backup std.Address // backup address
+
+	ErrInvalidAddr  = errors.New("leon's config: invalid address")
+	ErrUnauthorized = errors.New("leon's config: unauthorized")
 )
 
 func init() {
@@ -24,7 +27,7 @@ func Backup() std.Address {
 
 func SetAddress(a std.Address) error {
 	if !a.IsValid() {
-		return errors.New("config: invalid address")
+		return ErrInvalidAddr
 	}
 
 	if err := checkAuthorized(); err != nil {
@@ -37,7 +40,7 @@ func SetAddress(a std.Address) error {
 
 func SetBackup(a std.Address) error {
 	if !a.IsValid() {
-		return errors.New("config: invalid address")
+		return ErrInvalidAddr
 	}
 
 	if err := checkAuthorized(); err != nil {
@@ -50,16 +53,11 @@ func SetBackup(a std.Address) error {
 
 func checkAuthorized() error {
 	caller := std.PrevRealm().Addr()
-	if caller != main || caller != backup {
-		return errors.New("config: unauthorized")
+	isAuthorized := caller == main || caller == backup
+
+	if !isAuthorized {
+		return ErrUnauthorized
 	}
 
 	return nil
 }
-
-func AssertAuthorized() {
-	caller := std.PrevRealm().Addr()
-	if caller != main || caller != backup {
-		panic("config: unauthorized")
-	}
-}
diff --git a/examples/gno.land/r/leon/home/home.gno b/examples/gno.land/r/leon/home/home.gno
index 1f6a07e8959..ba688792a4c 100644
--- a/examples/gno.land/r/leon/home/home.gno
+++ b/examples/gno.land/r/leon/home/home.gno
@@ -34,13 +34,19 @@ TODO import r/gh
 }
 
 func UpdatePFP(url, caption string) {
-	config.AssertAuthorized()
+	if !isAuthorized(std.PrevRealm().Addr()) {
+		panic(config.ErrUnauthorized)
+	}
+
 	pfp = url
 	pfpCaption = caption
 }
 
 func UpdateAboutMe(col1, col2 string) {
-	config.AssertAuthorized()
+	if !isAuthorized(std.PrevRealm().Addr()) {
+		panic(config.ErrUnauthorized)
+	}
+
 	abtMe[0] = col1
 	abtMe[1] = col2
 }
@@ -119,3 +125,7 @@ func renderMillipede() string {
 
 	return out
 }
+
+func isAuthorized(addr std.Address) bool {
+	return addr == config.Address() || addr == config.Backup()
+}