diff --git a/frontend/src/components/mii/share-mii-button.tsx b/frontend/src/components/mii/share-mii-button.tsx
index 9351726..38f3d37 100644
--- a/frontend/src/components/mii/share-mii-button.tsx
+++ b/frontend/src/components/mii/share-mii-button.tsx
@@ -13,7 +13,7 @@ export default function ShareMiiButton({ miiId }: Props) {
 	const [hasCopiedUrl, setHasCopiedUrl] = useState(false);
 	const [hasCopiedImage, setHasCopiedImage] = useState(false);
 
-	const url = `${import.meta.env.PUBLIC_BASE_URL}/mii/${miiId}`;
+	const url = `${import.meta.env.VITE_BASE_URL}/mii/${miiId}`;
 
 	const handleCopyUrl = async () => {
 		await navigator.clipboard.writeText(url);
diff --git a/frontend/src/components/profile-information.tsx b/frontend/src/components/profile-information.tsx
index 374f3f5..5c21c73 100644
--- a/frontend/src/components/profile-information.tsx
+++ b/frontend/src/components/profile-information.tsx
@@ -12,10 +12,12 @@ interface Props {
 export default function ProfileInformation({ user, page }: Props) {
 	const $session = useStore(session);
 
+	if (!user) return null;
+
 	const currentUser = user ?? $session?.user;
-	const isAdmin = currentUser?.id === Number(import.meta.env.PUBLIC_ADMIN_USER_ID);
-	const isContributor = import.meta.env.PUBLIC_CONTRIBUTORS_USER_IDS?.split(",").includes(user.id);
-	const isOwnProfile = currentUser?.id === user.id;
+	const isAdmin = currentUser?.id === Number(import.meta.env.VITE_ADMIN_USER_ID);
+	const isContributor = import.meta.env.VITE_CONTRIBUTORS_USER_IDS?.split(",").includes(user?.id);
+	const isOwnProfile = currentUser?.id === user?.id;
 
 	return (
 		<div className="bg-amber-50 border-2 border-amber-500 rounded-2xl shadow-lg p-4 flex gap-4 mb-2 max-md:flex-col">
diff --git a/frontend/src/pages/mii.tsx b/frontend/src/pages/mii.tsx
index d1ce7e7..d6751b5 100644
--- a/frontend/src/pages/mii.tsx
+++ b/frontend/src/pages/mii.tsx
@@ -33,7 +33,7 @@ export default function MiiPage() {
 				setLoading(false);
 				window.location.href = "/404";
 			});
-	}, []);
+	}, [id]);
 
 	if (loading || !mii) {
 		return <div className="p-6 text-center">Loading...</div>;
@@ -258,7 +258,9 @@ export default function MiiPage() {
 							{/* Tags */}
 							<div id="tags" className="flex flex-wrap gap-1 mt-1 *:px-2 *:py-1 *:bg-orange-300 *:rounded-full *:text-xs">
 								{mii.tags.map((tag: string) => (
-									<Link to={`/tags=${tag}`}>{tag}</Link>
+									<Link to={`/tags=${tag}`} key={tag}>
+										{tag}
+									</Link>
 								))}
 							</div>
 
@@ -333,8 +335,11 @@ export default function MiiPage() {
 
 					{images.length > 0 ? (
 						<div className="grid grid-cols-3 gap-2 w-full max-md:grid-cols-2 max-[24rem]:grid-cols-1">
-							{images.map((src) => (
-								<div className="relative aspect-3/2 rounded-xl bg-black/65 border-2 border-amber-400 shadow-md overflow-hidden transition hover:shadow-lg shadow-black/30">
+							{images.map((src, index) => (
+								<div
+									key={index}
+									className="relative aspect-3/2 rounded-xl bg-black/65 border-2 border-amber-400 shadow-md overflow-hidden transition hover:shadow-lg shadow-black/30"
+								>
 									<img
 										src={src}
 										alt="mii screenshot background blur"
diff --git a/frontend/src/pages/profile.tsx b/frontend/src/pages/profile.tsx
index 709a1ba..6c1aaa1 100644
--- a/frontend/src/pages/profile.tsx
+++ b/frontend/src/pages/profile.tsx
@@ -22,7 +22,7 @@ export default function ProfilePage() {
 				setLoading(false);
 				window.location.href = "/404";
 			});
-	}, []);
+	}, [id]);
 
 	if (loading || !user) {
 		return <div className="p-6 text-center">Loading...</div>;