diff --git a/.github/workflows/mobile_tests.yml b/.github/workflows/mobile_tests.yml
index 23c86ca78a..aeb6ec8730 100644
--- a/.github/workflows/mobile_tests.yml
+++ b/.github/workflows/mobile_tests.yml
@@ -32,7 +32,7 @@ jobs:
         run: echo "LANG=en_US.UTF-8" >> $GITHUB_ENV
 
       - name: Tests
-        run: xvfb-run go test -race -tags mobile,ci,migrated_fynedo ./...
+        run: xvfb-run go test -race -tags mobile,ci ./...
 
       - name: Compile
         working-directory: cmd/fyne_demo
diff --git a/.github/workflows/platform_tests.yml b/.github/workflows/platform_tests.yml
index 11f5e3ec59..f64555395a 100644
--- a/.github/workflows/platform_tests.yml
+++ b/.github/workflows/platform_tests.yml
@@ -14,12 +14,12 @@ jobs:
         include:
           - os: ubuntu-latest
             runner: xvfb-run
-            tags: ci,migrated_fynedo
+            tags: ci
             cover: -covermode=atomic -coverprofile=coverage.out
           - os: macos-latest
-            tags: no_glfw,ci,migrated_fynedo
+            tags: no_glfw,ci
           - os: windows-latest
-            tags: no_glfw,migrated_fynedo
+            tags: no_glfw
 
     steps:
       - uses: actions/checkout@v5
diff --git a/cmd/fyne/internal/commands/build.go b/cmd/fyne/internal/commands/build.go
index 417814fde3..618d5cd32e 100644
--- a/cmd/fyne/internal/commands/build.go
+++ b/cmd/fyne/internal/commands/build.go
@@ -230,8 +230,8 @@ func (b *Builder) build() error {
 	if b.release {
 		tags = append(tags, "release")
 	}
-	if ok, set := b.Migrations["fyneDo"]; ok && set {
-		tags = append(tags, "migrated_fynedo")
+	if ok, set := b.Migrations["fyneDo"]; ok && !set {
+		tags = append(tags, "legacy_threading")
 	}
 	if len(tags) > 0 {
 		args = append(args, "-tags", strings.Join(tags, ","))
diff --git a/internal/async/map.go b/internal/async/map.go
index e3aa859c94..510bfc39ce 100644
--- a/internal/async/map.go
+++ b/internal/async/map.go
@@ -1,4 +1,4 @@
-//go:build !migrated_fynedo
+//go:build legacy_threading
 
 package async
 
diff --git a/internal/async/map_clear.go b/internal/async/map_clear.go
index d365103273..8889bef9d5 100644
--- a/internal/async/map_clear.go
+++ b/internal/async/map_clear.go
@@ -1,4 +1,4 @@
-//go:build !go1.23 && !migrated_fynedo
+//go:build !go1.23 && legacy_threading
 
 package async
 
diff --git a/internal/async/map_clear_go1.23.go b/internal/async/map_clear_go1.23.go
index c3ea5d6e9a..2e2cf864b8 100644
--- a/internal/async/map_clear_go1.23.go
+++ b/internal/async/map_clear_go1.23.go
@@ -1,4 +1,4 @@
-//go:build go1.23 && !migrated_fynedo
+//go:build go1.23 && legacy_threading
 
 package async
 
diff --git a/internal/async/map_migratedfynedo.go b/internal/async/map_migratedfynedo.go
index bd7fa39b9d..37ec327ef5 100644
--- a/internal/async/map_migratedfynedo.go
+++ b/internal/async/map_migratedfynedo.go
@@ -1,4 +1,4 @@
-//go:build migrated_fynedo
+//go:build !legacy_threading
 
 package async
 
diff --git a/internal/async/queue.go b/internal/async/queue.go
index 71681eaaee..70bd404fa6 100755
--- a/internal/async/queue.go
+++ b/internal/async/queue.go
@@ -1,4 +1,4 @@
-//go:build !migrated_fynedo
+//go:build legacy_threading
 
 package async
 
diff --git a/internal/async/queue_migratedfynedo.go b/internal/async/queue_migratedfynedo.go
index 2f12a868ce..ed44f425e1 100644
--- a/internal/async/queue_migratedfynedo.go
+++ b/internal/async/queue_migratedfynedo.go
@@ -1,4 +1,4 @@
-//go:build migrated_fynedo
+//go:build !legacy_threading
 
 package async
 
diff --git a/internal/build/build.go b/internal/build/build.go
index 8567284fcd..9d2566d4d9 100644
--- a/internal/build/build.go
+++ b/internal/build/build.go
@@ -10,7 +10,7 @@ import (
 var (
 	migrateCheck sync.Once
 
-	migratedFyneDo bool
+	migratedFyneDo bool = true
 )
 
 func MigratedToFyneDo() bool {
diff --git a/internal/build/migrated_fynedo.go b/internal/build/migrated_fynedo.go
index 089f766dce..a799f8a5b5 100644
--- a/internal/build/migrated_fynedo.go
+++ b/internal/build/migrated_fynedo.go
@@ -1,4 +1,4 @@
-//go:build migrated_fynedo
+//go:build !legacy_threading
 
 package build
 
diff --git a/internal/build/migrated_notfynedo.go b/internal/build/migrated_notfynedo.go
index a9fbdd5479..a99fe02d92 100644
--- a/internal/build/migrated_notfynedo.go
+++ b/internal/build/migrated_notfynedo.go
@@ -1,4 +1,4 @@
-//go:build !migrated_fynedo
+//go:build legacy_threading
 
 package build