diff --git a/src/main/scala/net/yoshinorin/qualtet/Modules.scala b/src/main/scala/net/yoshinorin/qualtet/Modules.scala
index 3ef62528..87564fb3 100644
--- a/src/main/scala/net/yoshinorin/qualtet/Modules.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/Modules.scala
@@ -63,7 +63,7 @@ class Modules(tx: Transactor[IO]) {
   val config = ApplicationConfig.load
 
   given log4catsLogger: Log4CatsLoggerFactory[IO] = Log4CatsSlf4jFactory.create[IO]
-  given dbContext: DoobieExecuter = new DoobieExecuter(tx)
+  given doobieExecuterContext: DoobieExecuter = new DoobieExecuter(tx)
 
   val migrator: Migrator = new Migrator(config.db)
 
diff --git a/src/test/scala/net/yoshinorin/qualtet/domains/contentTaggings/ContentTaggingServiceSpec.scala b/src/test/scala/net/yoshinorin/qualtet/domains/contentTaggings/ContentTaggingServiceSpec.scala
index 8c246588..8f22fa7e 100644
--- a/src/test/scala/net/yoshinorin/qualtet/domains/contentTaggings/ContentTaggingServiceSpec.scala
+++ b/src/test/scala/net/yoshinorin/qualtet/domains/contentTaggings/ContentTaggingServiceSpec.scala
@@ -12,7 +12,7 @@ import cats.effect.unsafe.implicits.global
 // testOnly net.yoshinorin.qualtet.domains.contentTaggings.ContentTaggingServiceSpec
 class ContentTaggingServiceSpec extends AnyWordSpec with BeforeAndAfterAll {
 
-  given dbContext: DoobieExecuter = new DoobieExecuter(fixtureTx)
+  given doobieExecuterContext: DoobieExecuter = new DoobieExecuter(fixtureTx)
 
   val requestContents: List[RequestContent] = {
     List(1, 2)
@@ -44,7 +44,7 @@ class ContentTaggingServiceSpec extends AnyWordSpec with BeforeAndAfterAll {
       val contents = contentService.findByPathWithMeta(Path("/test/ContentTaggingServiceSpec-1")).unsafeRunSync().get
       val shouledDeleteContentTaggings = (contents1.id, Seq(contents.tags.head.id, contents.tags.last.id))
 
-      dbContext.transact(contentTaggingService.bulkDeleteActions(shouledDeleteContentTaggings)).unsafeRunSync()
+      doobieExecuterContext.transact(contentTaggingService.bulkDeleteActions(shouledDeleteContentTaggings)).unsafeRunSync()
       val result = contentService.findByPathWithMeta(Path("/test/ContentTaggingServiceSpec-1")).unsafeRunSync().get
 
       assert(result.tags.size === 1)
@@ -53,7 +53,7 @@ class ContentTaggingServiceSpec extends AnyWordSpec with BeforeAndAfterAll {
 
     "not be delete any tag" in {
       val beforeDelete = contentService.findByPath(Path("/test/ContentTaggingServiceSpec-2")).unsafeRunSync().get
-      dbContext.transact(contentTaggingService.bulkDeleteActions(beforeDelete.id, Seq())).unsafeRunSync()
+      doobieExecuterContext.transact(contentTaggingService.bulkDeleteActions(beforeDelete.id, Seq())).unsafeRunSync()
       val afterDelete = contentService.findByPathWithMeta(Path("/test/ContentTaggingServiceSpec-2")).unsafeRunSync().get
 
       assert(afterDelete.tags.size === 3)
diff --git a/src/test/scala/net/yoshinorin/qualtet/domains/tags/TagServiceSpec.scala b/src/test/scala/net/yoshinorin/qualtet/domains/tags/TagServiceSpec.scala
index 32c06d6d..3a5a802f 100644
--- a/src/test/scala/net/yoshinorin/qualtet/domains/tags/TagServiceSpec.scala
+++ b/src/test/scala/net/yoshinorin/qualtet/domains/tags/TagServiceSpec.scala
@@ -12,7 +12,7 @@ import cats.effect.unsafe.implicits.global
 // testOnly net.yoshinorin.qualtet.domains.TagServiceSpec
 class TagServiceSpec extends AnyWordSpec with BeforeAndAfterAll {
 
-  given dbContext: DoobieExecuter = new DoobieExecuter(fixtureTx)
+  given doobieExecuterContext: DoobieExecuter = new DoobieExecuter(fixtureTx)
 
   val requestContents = makeRequestContents(10, "tagService")
 
@@ -42,7 +42,7 @@ class TagServiceSpec extends AnyWordSpec with BeforeAndAfterAll {
     "findByContentId" in {
       val r = (for {
         c <- contentService.findByPath(Path("/test/tagService-4"))
-        t <- dbContext.transact(tagService.findByContentIdActions(c.get.id))
+        t <- doobieExecuterContext.transact(tagService.findByContentIdActions(c.get.id))
       } yield t).unsafeRunSync()
       assert(r.head.name === TagName("tagServiceTag4"))
     }
diff --git a/src/test/scala/net/yoshinorin/qualtet/fixture/Fixture.scala b/src/test/scala/net/yoshinorin/qualtet/fixture/Fixture.scala
index bfa600cb..363b925d 100644
--- a/src/test/scala/net/yoshinorin/qualtet/fixture/Fixture.scala
+++ b/src/test/scala/net/yoshinorin/qualtet/fixture/Fixture.scala
@@ -66,7 +66,7 @@ object Fixture {
   )
   private val modules = Modules(fixtureTx)
   given log4catsLogger: Log4CatsLoggerFactory[IO] = Log4CatsSlf4jFactory.create[IO]
-  given dbContext: DoobieExecuter = new DoobieExecuter(fixtureTx)
+  given doobieExecuterContext: DoobieExecuter = new DoobieExecuter(fixtureTx)
 
   val migrator = modules.migrator
   val articleService = modules.articleService