diff --git a/.github/workflows/build_pull_request.yaml b/.github/workflows/build_pull_request.yaml
new file mode 100644
index 0000000..e87bad9
--- /dev/null
+++ b/.github/workflows/build_pull_request.yaml
@@ -0,0 +1,20 @@
+name: "Build Pull Request"
+on: pull_request
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v2
+        with:
+          distribution: temurin
+          java-version: 11
+
+      - uses: gradle/gradle-build-action@v2
+      - run: gradle assembleRelease
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: ${{ github.sha }}
+          path: app/build/outputs/apk/release/*.apk
\ No newline at end of file
diff --git a/app/src/main/java/me/ash/reader/ui/page/home/feeds/FeedsViewModel.kt b/app/src/main/java/me/ash/reader/ui/page/home/feeds/FeedsViewModel.kt
index 541b890..39cc5bf 100644
--- a/app/src/main/java/me/ash/reader/ui/page/home/feeds/FeedsViewModel.kt
+++ b/app/src/main/java/me/ash/reader/ui/page/home/feeds/FeedsViewModel.kt
@@ -102,15 +102,13 @@ class FeedsViewModel @Inject constructor(
                 }
             }
             groupWithFeedList
-        }.onStart {
-
         }.onEach { groupWithFeedList ->
             _viewState.update {
                 it.copy(
                     importantCount = groupWithFeedList.sumOf { it.group.important ?: 0 }.run {
                         when {
-                            isStarred -> stringsRepository.getString(R.string.unread_desc, this)
-                            isUnread -> stringsRepository.getString(R.string.starred_desc, this)
+                            isStarred -> stringsRepository.getString(R.string.starred_desc, this)
+                            isUnread -> stringsRepository.getString(R.string.unread_desc, this)
                             else -> stringsRepository.getString(R.string.all_desc, this)
                         }
                     },
@@ -118,7 +116,7 @@ class FeedsViewModel @Inject constructor(
                     feedsVisible = List(groupWithFeedList.size, init = { true })
                 )
             }
-        }.catch() {
+        }.catch {
             Log.e("RLog", "catch in articleRepository.pullFeeds(): ${it.message}")
         }.flowOn(Dispatchers.Default).collect()
     }