diff --git a/dist/index.js b/dist/index.js
index 462a9b8..8114eaa 100755
--- a/dist/index.js
+++ b/dist/index.js
@@ -126,7 +126,7 @@ function readCrashlyticsReportTable(config) {
                         projectId: config.gcpProjectId
                     });
                     targetDate = core.getInput('target_date');
-                    if (targetDate !== undefined) {
+                    if (targetDate !== '') {
                         placeHolder = '@targetDate';
                     }
                     else {
diff --git a/package.json b/package.json
index b03b4b2..1948f86 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "crashlytics-analysis",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "",
   "scripts": {
     "prepublish": "tsc -p tsconfig.json",
diff --git a/src/index.ts b/src/index.ts
index 9059bf6..f9286b9 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -85,7 +85,7 @@ async function readCrashlyticsReportTable (config: CrashlyticsConfig): Promise<C
 
   const targetDate = core.getInput('target_date')
   let placeHolder: string
-  if (targetDate !== undefined) {
+  if (targetDate !== '') {
     placeHolder = '@targetDate'
   } else {
     // 実行時の関係で昨日のimportされてないケースがある