diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Category.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Category.kt
index ad684c04..92e7ede9 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Category.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Category.kt
@@ -18,7 +18,6 @@ import org.jetbrains.exposed.sql.selectAll
 import org.jetbrains.exposed.sql.transactions.transaction
 import org.jetbrains.exposed.sql.update
 import suwayomi.tachidesk.manga.impl.CategoryManga.removeMangaFromCategory
-import suwayomi.tachidesk.manga.impl.util.lang.isNotEmpty
 import suwayomi.tachidesk.manga.model.dataclass.CategoryDataClass
 import suwayomi.tachidesk.manga.model.table.CategoryMangaTable
 import suwayomi.tachidesk.manga.model.table.CategoryMetaTable
@@ -98,12 +97,14 @@ object Category {
 
     const val DEFAULT_CATEGORY_ID = 0
     const val DEFAULT_CATEGORY_NAME = "Default"
-    private fun addDefaultIfNecessary(categories: List<CategoryDataClass>): List<CategoryDataClass> =
-        if (MangaTable.select { (MangaTable.inLibrary eq true) and (MangaTable.defaultCategory eq true) }.isNotEmpty()) {
-            listOf(CategoryDataClass(DEFAULT_CATEGORY_ID, 0, DEFAULT_CATEGORY_NAME, true)) + categories
+    private fun addDefaultIfNecessary(categories: List<CategoryDataClass>): List<CategoryDataClass> {
+        val defaultCategorySize = MangaTable.select { (MangaTable.inLibrary eq true) and (MangaTable.defaultCategory eq true) }.count().toInt()
+        return if (defaultCategorySize > 0) {
+            listOf(CategoryDataClass(DEFAULT_CATEGORY_ID, 0, DEFAULT_CATEGORY_NAME, true, defaultCategorySize)) + categories
         } else {
             categories
         }
+    }
 
     fun getCategoryList(): List<CategoryDataClass> {
         return transaction {
@@ -123,6 +124,14 @@ object Category {
         }
     }
 
+    fun getCategorySize(categoryId: Int): Int {
+        return transaction {
+            CategoryMangaTable.select {
+                CategoryMangaTable.category eq categoryId
+            }.count().toInt()
+        }
+    }
+
     fun getCategoryMetaMap(categoryId: Int): Map<String, String> {
         return transaction {
             CategoryMetaTable.select { CategoryMetaTable.ref eq categoryId }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/model/dataclass/CategoryDataClass.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/model/dataclass/CategoryDataClass.kt
index 3e7fd1fb..70389d48 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/model/dataclass/CategoryDataClass.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/model/dataclass/CategoryDataClass.kt
@@ -12,5 +12,6 @@ data class CategoryDataClass(
     val order: Int,
     val name: String,
     val default: Boolean,
+    val size: Int,
     val meta: Map<String, String> = emptyMap()
 )
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/model/table/CategoryTable.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/model/table/CategoryTable.kt
index 8d8a08ab..32bef6b6 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/model/table/CategoryTable.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/model/table/CategoryTable.kt
@@ -23,5 +23,6 @@ fun CategoryTable.toDataClass(categoryEntry: ResultRow) = CategoryDataClass(
     categoryEntry[order],
     categoryEntry[name],
     categoryEntry[isDefault],
+    Category.getCategorySize(categoryEntry[id].value),
     Category.getCategoryMetaMap(categoryEntry[id].value)
 )