diff --git a/android/app/build.gradle.kts b/android/app/build.gradle.kts
index 783c2b3..97c3e66 100644
--- a/android/app/build.gradle.kts
+++ b/android/app/build.gradle.kts
@@ -9,7 +9,8 @@ plugins {
 }
 
 // Release signing: key.properties から読み込み（存在しない場合はdebug署名にフォールバック）
-val keyPropertiesFile = rootProject.file("app/key.properties")
+// key.properties の配置場所: android/key.properties（.gitignore で除外済み）
+val keyPropertiesFile = rootProject.file("key.properties")
 val keyProperties = Properties()
 if (keyPropertiesFile.exists()) {
     keyProperties.load(keyPropertiesFile.inputStream())
diff --git a/docs/DISTRIBUTION_API_KEY_SETUP.md b/docs/DISTRIBUTION_API_KEY_SETUP.md
index 5b2bd04..5afcc02 100644
--- a/docs/DISTRIBUTION_API_KEY_SETUP.md
+++ b/docs/DISTRIBUTION_API_KEY_SETUP.md
@@ -78,7 +78,7 @@ storeFile=ponshu_release.jks
 import java.util.Properties
 
 // key.properties からリリース署名情報を読み込み
-val keyPropertiesFile = rootProject.file("app/key.properties")
+val keyPropertiesFile = rootProject.file("key.properties")
 val keyProperties = Properties()
 if (keyPropertiesFile.exists()) {
     keyProperties.load(keyPropertiesFile.inputStream())