diff --git a/packages/frontend/src/components/MkReactionsViewer.reaction.vue b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
index a89f947fa7..e9ed1cf4ac 100644
--- a/packages/frontend/src/components/MkReactionsViewer.reaction.vue
+++ b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
@@ -106,7 +106,9 @@ async function toggleReaction() {
 					reaction: props.reaction,
 				}).then(() => {
 					const emoji = customEmojisMap.get(emojiName.value);
-					if (emoji == null) return;
+					if (emoji == null && getUnicodeEmojiOrNull(props.reaction) == null) {
+						return;
+					}
 					noteEvents.emit(`reacted:${props.noteId}`, {
 						userId: me.id,
 						reaction: props.reaction,
@@ -138,7 +140,9 @@ async function toggleReaction() {
 			reaction: props.reaction,
 		}).then(() => {
 			const emoji = customEmojisMap.get(emojiName.value);
-			if (emoji == null) return;
+			if (emoji == null && getUnicodeEmojiOrNull(props.reaction) == null) {
+				return;
+			}
 
 			noteEvents.emit(`reacted:${props.noteId}`, {
 				userId: me.id,