diff --git a/android/festago/app/src/main/java/com/festago/festago/presentation/service/TicketEntryService.kt b/android/festago/app/src/main/java/com/festago/festago/presentation/service/TicketEntryService.kt
index b2d1e0ac6..14abf21a4 100644
--- a/android/festago/app/src/main/java/com/festago/festago/presentation/service/TicketEntryService.kt
+++ b/android/festago/app/src/main/java/com/festago/festago/presentation/service/TicketEntryService.kt
@@ -9,7 +9,7 @@ class TicketEntryService : FirebaseMessagingService() {
     override fun onMessageReceived(remoteMessage: RemoteMessage) {
         runBlocking {
             // TODO: 입장완료 로직인지 확인하는 로직 추가 필요
-            ticketStateChangeEvent.emit(true)
+            ticketStateChangeEvent.emit(Unit)
         }
     }
 
@@ -18,6 +18,6 @@ class TicketEntryService : FirebaseMessagingService() {
     }
 
     companion object {
-        val ticketStateChangeEvent: MutableSharedFlow<Boolean> = MutableSharedFlow()
+        val ticketStateChangeEvent: MutableSharedFlow<Unit> = MutableSharedFlow()
     }
 }
diff --git a/android/festago/app/src/main/java/com/festago/festago/presentation/ui/ticketentry/TicketEntryActivity.kt b/android/festago/app/src/main/java/com/festago/festago/presentation/ui/ticketentry/TicketEntryActivity.kt
index 9e61406a2..542aa8132 100644
--- a/android/festago/app/src/main/java/com/festago/festago/presentation/ui/ticketentry/TicketEntryActivity.kt
+++ b/android/festago/app/src/main/java/com/festago/festago/presentation/ui/ticketentry/TicketEntryActivity.kt
@@ -15,6 +15,7 @@ import com.google.zxing.BarcodeFormat
 import com.journeyapps.barcodescanner.BarcodeEncoder
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.flow.collectLatest
+import kotlinx.coroutines.flow.first
 
 @AndroidEntryPoint
 class TicketEntryActivity : AppCompatActivity() {
@@ -65,13 +66,11 @@ class TicketEntryActivity : AppCompatActivity() {
             }
         }
         repeatOnStarted(this) {
-            TicketEntryService.ticketStateChangeEvent.collect { event ->
-                if (event) {
-                    // TODO 티켓 스캔 화면 처리
-                    Toast.makeText(this, "티켓이 스캔되었습니다.", Toast.LENGTH_SHORT).show()
-                    setResult(RESULT_OK, intent)
-                    finish()
-                }
+            TicketEntryService.ticketStateChangeEvent.first {
+                Toast.makeText(this, "티켓이 스캔되었습니다.", Toast.LENGTH_SHORT).show()
+                setResult(RESULT_OK, intent)
+                finish()
+                true
             }
         }
     }
diff --git a/android/festago/app/src/main/java/com/festago/festago/presentation/ui/ticketentry/TicketEntryViewModel.kt b/android/festago/app/src/main/java/com/festago/festago/presentation/ui/ticketentry/TicketEntryViewModel.kt
index b2edea862..ae14081a2 100644
--- a/android/festago/app/src/main/java/com/festago/festago/presentation/ui/ticketentry/TicketEntryViewModel.kt
+++ b/android/festago/app/src/main/java/com/festago/festago/presentation/ui/ticketentry/TicketEntryViewModel.kt
@@ -66,9 +66,11 @@ class TicketEntryViewModel @Inject constructor(
         }
     }
 
-    private suspend fun setTimer(ticketId: Long, ticketCode: TicketCode) {
-        timer.timerListener = createTimerListener(ticketId)
-        timer.start(ticketCode.period)
+    private fun setTimer(ticketId: Long, ticketCode: TicketCode) {
+        viewModelScope.launch {
+            timer.timerListener = createTimerListener(ticketId)
+            timer.start(ticketCode.period)
+        }
     }
 
     private fun createTimerListener(ticketId: Long): TimerListener = object : TimerListener {