diff --git a/packages/frontend/src/components/MkEmojiPicker.vue b/packages/frontend/src/components/MkEmojiPicker.vue
index 297d5f899e..43df9df018 100644
--- a/packages/frontend/src/components/MkEmojiPicker.vue
+++ b/packages/frontend/src/components/MkEmojiPicker.vue
@@ -233,7 +233,7 @@ watch(q, () => {
 
 			// 名前にキーワードが含まれている
 			for (const emoji of emojis) {
-				if (keywords.every(keyword => emoji.name.includes(keyword))) {
+				if (keywords.every(keyword => emoji.name.toLowerCase().includes(keyword))) {
 					matches.add(emoji);
 					if (matches.size >= max) break;
 				}
@@ -242,7 +242,7 @@ watch(q, () => {
 
 			// 名前またはエイリアスにキーワードが含まれている
 			for (const emoji of emojis) {
-				if (keywords.every(keyword => emoji.name.includes(keyword) || emoji.aliases.some(alias => alias.includes(keyword)))) {
+				if (keywords.every(keyword => emoji.name.toLowerCase().includes(keyword) || emoji.aliases.some(alias => alias.toLowerCase().includes(keyword)))) {
 					matches.add(emoji);
 					if (matches.size >= max) break;
 				}
@@ -254,7 +254,7 @@ watch(q, () => {
 			if (matches.size >= max) return matches;
 
 			for (const emoji of emojis) {
-				if (emoji.aliases.some(alias => alias === newQ)) {
+				if (emoji.aliases.some(alias => alias.toLowerCase() === newQ)) {
 					matches.add(emoji);
 					if (matches.size >= max) break;
 				}
@@ -262,7 +262,7 @@ watch(q, () => {
 			if (matches.size >= max) return matches;
 
 			for (const emoji of emojis) {
-				if (emoji.name.startsWith(newQ)) {
+				if (emoji.name.toLowerCase().startsWith(newQ)) {
 					matches.add(emoji);
 					if (matches.size >= max) break;
 				}
@@ -270,7 +270,7 @@ watch(q, () => {
 			if (matches.size >= max) return matches;
 
 			for (const emoji of emojis) {
-				if (emoji.aliases.some(alias => alias.startsWith(newQ))) {
+				if (emoji.aliases.some(alias => alias.toLowerCase().startsWith(newQ))) {
 					matches.add(emoji);
 					if (matches.size >= max) break;
 				}
@@ -278,7 +278,7 @@ watch(q, () => {
 			if (matches.size >= max) return matches;
 
 			for (const emoji of emojis) {
-				if (emoji.name.includes(newQ)) {
+				if (emoji.name.toLowerCase().includes(newQ)) {
 					matches.add(emoji);
 					if (matches.size >= max) break;
 				}
@@ -286,7 +286,7 @@ watch(q, () => {
 			if (matches.size >= max) return matches;
 
 			for (const emoji of emojis) {
-				if (emoji.aliases.some(alias => alias.includes(newQ))) {
+				if (emoji.aliases.some(alias => alias.toLowerCase().includes(newQ))) {
 					matches.add(emoji);
 					if (matches.size >= max) break;
 				}