diff --git a/src/main/java/run/halo/app/config/HaloConfiguration.java b/src/main/java/run/halo/app/config/HaloConfiguration.java
index 9b5be4d5b..49f4bff22 100644
--- a/src/main/java/run/halo/app/config/HaloConfiguration.java
+++ b/src/main/java/run/halo/app/config/HaloConfiguration.java
@@ -151,6 +151,7 @@ public class HaloConfiguration {
                 "/api/admin/refresh/*",
                 "/api/admin/installations",
                 "/api/admin/recoveries/migrations/*",
+                "/api/admin/migrations/*",
                 "/api/admin/is_installed",
                 "/api/admin/password/code",
                 "/api/admin/password/reset"
diff --git a/src/main/java/run/halo/app/controller/admin/api/InstallController.java b/src/main/java/run/halo/app/controller/admin/api/InstallController.java
index 2ad1661ba..b2aea0d35 100644
--- a/src/main/java/run/halo/app/controller/admin/api/InstallController.java
+++ b/src/main/java/run/halo/app/controller/admin/api/InstallController.java
@@ -179,7 +179,7 @@ public class InstallController {
     @Nullable
     private Category createDefaultCategoryIfAbsent() {
         long categoryCount = categoryService.count();
-        if (categoryCount == 0) {
+        if (categoryCount > 0) {
             return null;
         }
 
diff --git a/src/main/java/run/halo/app/controller/admin/api/MigrateController.java b/src/main/java/run/halo/app/controller/admin/api/MigrateController.java
index 98a9323ac..0fd622846 100644
--- a/src/main/java/run/halo/app/controller/admin/api/MigrateController.java
+++ b/src/main/java/run/halo/app/controller/admin/api/MigrateController.java
@@ -16,7 +16,7 @@ import run.halo.app.service.MigrateService;
  * @date 2019-10-29
  */
 @RestController
-@RequestMapping("/api/admin/migrates")
+@RequestMapping("/api/admin/migrations")
 public class MigrateController {
 
     private final MigrateService migrateService;
diff --git a/src/main/java/run/halo/app/handler/migrate/MigrateHandlers.java b/src/main/java/run/halo/app/handler/migrate/MigrateHandlers.java
index cbce9832d..e7ac60f11 100644
--- a/src/main/java/run/halo/app/handler/migrate/MigrateHandlers.java
+++ b/src/main/java/run/halo/app/handler/migrate/MigrateHandlers.java
@@ -42,6 +42,7 @@ public class MigrateHandlers {
         for (MigrateHandler migrateHandler : migrateHandlers) {
             if (migrateHandler.supportType(migrateType)) {
                 migrateHandler.migrate(file);
+                return;
             }
         }