diff --git a/src/routes/(app)/chapters/[chapterId=id]/+page.svelte b/src/routes/(app)/chapters/[chapterId=id]/+page.svelte
index fbe5ec3..cf602c6 100644
--- a/src/routes/(app)/chapters/[chapterId=id]/+page.svelte
+++ b/src/routes/(app)/chapters/[chapterId=id]/+page.svelte
@@ -19,11 +19,11 @@
 		difficultyList?: string;
 	};
 
-	let name = '';
+	let name: string = '';
 	let themeList: string[] = [];
 	let difficultyList: string[] = [];
 
-	const difficulties = data.chapter?.puzzles?.reduce((acc, puzzle) => {
+	const difficulties = data.chapter?.puzzles?.reduce((acc: Record<string, string>, puzzle) => {
 		const tag = puzzle.tags?.find((tag) =>
 			['easy', 'medium', 'hard'].includes(tag.name.toLowerCase())
 		);
@@ -35,7 +35,7 @@
 		return acc;
 	}, {}) as Record<string, string>;
 
-	const themes = data.chapter?.puzzles?.reduce((acc, puzzle) => {
+	const themes = data.chapter?.puzzles?.reduce((acc: Record<string, string>, puzzle) => {
 		puzzle.tags?.forEach((tag) => {
 			if (!['easy', 'medium', 'hard'].includes(tag.name.toLowerCase())) {
 				acc[tag.name] = tag.name.toLowerCase();
@@ -64,7 +64,7 @@
 
 	export const snapshot: Snapshot<Filters> = {
 		capture: () => ({
-			name,
+			name: name,
 			themeList: themeList.length ? themeList.join(',') : '',
 			difficultyList: difficultyList.length ? difficultyList.join(',') : ''
 		}),