diff --git a/app/src/main/java/com/dongyang/android/youdongknowme/ui/adapter/OnboardingDepartAdapter.kt b/app/src/main/java/com/dongyang/android/youdongknowme/ui/adapter/OnboardingDepartAdapter.kt
index 1681c685..fe1ee89c 100644
--- a/app/src/main/java/com/dongyang/android/youdongknowme/ui/adapter/OnboardingDepartAdapter.kt
+++ b/app/src/main/java/com/dongyang/android/youdongknowme/ui/adapter/OnboardingDepartAdapter.kt
@@ -10,7 +10,7 @@ import com.dongyang.android.youdongknowme.ui.view.depart.DepartClickListener
 
 class OnboardingDepartAdapter : RecyclerView.Adapter<OnboardingDepartAdapter.ViewHolder>() {
 
-    private var item = ArrayList<String>()
+    private val item = ArrayList<String>()
     private var itemClickListener: DepartClickListener? = null
     private var currentPosition = -1
     private var beforePosition = -1
@@ -25,13 +25,9 @@ class OnboardingDepartAdapter : RecyclerView.Adapter<OnboardingDepartAdapter.Vie
         }
     }
 
-    fun setItems(list: ArrayList<String>) {
-        this.item = list
-        notifyDataSetChanged()
-    }
-
     @SuppressLint("NotifyDataSetChanged")
     fun submitList(item: ArrayList<String>) {
+        this.item.clear()
         this.item.addAll(item)
         notifyDataSetChanged()
     }
diff --git a/app/src/main/java/com/dongyang/android/youdongknowme/ui/view/depart/OnboardingDepartActivity.kt b/app/src/main/java/com/dongyang/android/youdongknowme/ui/view/depart/OnboardingDepartActivity.kt
index 2bc7fcf5..2fbad608 100644
--- a/app/src/main/java/com/dongyang/android/youdongknowme/ui/view/depart/OnboardingDepartActivity.kt
+++ b/app/src/main/java/com/dongyang/android/youdongknowme/ui/view/depart/OnboardingDepartActivity.kt
@@ -64,7 +64,7 @@ class OnboardingDepartActivity : BaseActivity<ActivityOnboardingDepartBinding, D
                 searchList = ArrayList<String>()
 
                 if (searchText.isEmpty()) {
-                    adapter.setItems(emptyList)
+                    adapter.submitList(emptyList)
                 } else {
                     // 검색 단어를 포함하는지 확인
                     for (item in items) {
@@ -72,7 +72,7 @@ class OnboardingDepartActivity : BaseActivity<ActivityOnboardingDepartBinding, D
                             searchList.add(item)
                         }
                     }
-                    adapter.setItems(searchList)
+                    adapter.submitList(searchList)
                 }
             }
         })