diff --git a/CHANGELOG.md b/CHANGELOG.md
index b460ead..76648a3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# 2026.6.0
+- Fix: 地震情報で津波の心配についての情報が記載されない問題
+
 # 2026.5.9
 - Fix: pnpmが動作しない問題
 
diff --git a/src/feature/earthquake/index.ts b/src/feature/earthquake/index.ts
index 05e0501..77807df 100644
--- a/src/feature/earthquake/index.ts
+++ b/src/feature/earthquake/index.ts
@@ -182,10 +182,10 @@ const processMessage = async (message: any) => {
             : [`🪨深さ: ${message.earthquake.hypocenter.depth === 0
               ? "ごく浅い"
               : `${message.earthquake.hypocenter.depth}km`}`]));
-          earthquakeNoticeText.push(...(message.earthquake.domesticTsunami ?? "Unknown" === "Unknown"
+          earthquakeNoticeText.push(...((message.earthquake.domesticTsunami ?? "Unknown") === "Unknown"
             ? []
             : [domesticTsunamiMessages[(message.earthquake.domesticTsunami)]]));
-          earthquakeNoticeText.push(...(message.earthquake.foreignTsunami ?? "Unknown" === "Unknown"
+          earthquakeNoticeText.push(...((message.earthquake.foreignTsunami ?? "Unknown") === "Unknown"
             ? []
             : [foreignTsunamiMessages[(message.earthquake.foreignTsunami)]]));
           earthquakeNoticeText.push(...(pointsMsg === ""