diff --git a/src/client/components/misskey-flavored-markdown.vue b/src/client/components/misskey-flavored-markdown.vue
index 8fe6aba0cf..7425f1f7be 100644
--- a/src/client/components/misskey-flavored-markdown.vue
+++ b/src/client/components/misskey-flavored-markdown.vue
@@ -37,6 +37,10 @@ export default Vue.extend({
 		font-size: 0.8em;
 	}
 
+	::v-deep > code {
+		word-break: break-all;
+	}
+
 	::v-deep .title {
 		text-align: center;
 		border-bottom: solid 1px var(--divider);