diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/copy.ts b/packages/backend/src/server/api/endpoints/admin/emoji/copy.ts
index f968813197..acd2494131 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/copy.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/copy.ts
@@ -90,7 +90,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			const addedEmoji = await this.customEmojiService.add({
 				driveFile,
 				name: nameNfc,
-				category: emoji.category?.normalize('NFC'),
+				category: emoji.category?.normalize('NFC') ?? null,
 				aliases: emoji.aliases?.map(a => a.normalize('NFC')),
 				host: null,
 				license: emoji.license,
diff --git a/packages/frontend/src/scripts/check-word-mute.ts b/packages/frontend/src/scripts/check-word-mute.ts
index 8d3e96cea5..e65c327ffe 100644
--- a/packages/frontend/src/scripts/check-word-mute.ts
+++ b/packages/frontend/src/scripts/check-word-mute.ts
@@ -46,21 +46,21 @@ export function checkWordMute(note: Note, me: MeDetailed | null | undefined, mut
 function getNoteText(note: Note): string {
 	const textParts: string[] = [];
 
-	if (note.cw)
-		textParts.push(note.cw);
+	if (note.cw) textParts.push(note.cw);
 
-	if (note.text)
-		textParts.push(note.text);
+	if (note.text) textParts.push(note.text);
 
-	if (note.files)
-		for (const file of note.files)
-			if (file.comment)
-				textParts.push(file.comment);
+	if (note.files) {
+		for (const file of note.files) {
+			if (file.comment) textParts.push(file.comment);
+		}
+	}
 
-	if (note.poll)
-		for (const choice of note.poll.choices)
-			if (choice.text)
-				textParts.push(choice.text);
+	if (note.poll) {
+		for (const choice of note.poll.choices) {
+			if (choice.text) textParts.push(choice.text);
+		}
+	}
 
 	return textParts.join('\n').trim();
 }