diff --git a/domain/src/main/java/com/whyranoid/domain/model/Rule.kt b/domain/src/main/java/com/whyranoid/domain/model/Rule.kt
index b233f036..a86dccd9 100644
--- a/domain/src/main/java/com/whyranoid/domain/model/Rule.kt
+++ b/domain/src/main/java/com/whyranoid/domain/model/Rule.kt
@@ -6,7 +6,7 @@ data class Rule(
     val minute: Int
 ) {
     override fun toString(): String {
-        return "${dayOfWeek.dayResId}요일${hour}시${minute}분"
+        return "${dayOfWeek.dayResId}-$hour-$minute"
     }
 }
 
diff --git a/presentation/src/main/java/com/whyranoid/presentation/community/group/create/CreateGroupViewModel.kt b/presentation/src/main/java/com/whyranoid/presentation/community/group/create/CreateGroupViewModel.kt
index 65a65bd6..1db23b5e 100644
--- a/presentation/src/main/java/com/whyranoid/presentation/community/group/create/CreateGroupViewModel.kt
+++ b/presentation/src/main/java/com/whyranoid/presentation/community/group/create/CreateGroupViewModel.kt
@@ -39,7 +39,10 @@ class CreateGroupViewModel @Inject constructor(
     }
 
     fun onDialogConfirm(date: String, hour: String, minute: String) {
-        rules.value = rules.value + listOf("$date-$hour-$minute")
+        if (date.isNotEmpty() && hour.isNotEmpty() && minute.isNotEmpty()) {
+            rules.value = rules.value + listOf("$date-$hour-$minute")
+        }
+
         _showDialog.value = false
     }