diff --git a/build.sc b/build.sc
index 6bb698783e3..553391f5af1 100755
--- a/build.sc
+++ b/build.sc
@@ -938,8 +938,9 @@ object integration extends MillScalaModule {
   }
   override def forkArgs = testArgs()
 
-  def testMill: Target[PathRef] = T {
-    PathRef(installLocalTask(binFile = T.task((T.dest / "mill").toString()))())
+  def testMill: Target[PathRef] = {
+    val name = if (scala.util.Properties.isWin) "mill.bat" else "mill"
+    T { PathRef(installLocalTask(binFile = T.task((T.dest / name).toString()))()) }
   }
 
   trait Tests extends super.Tests {
diff --git a/integration/local/src/DocAnnotationsTests.scala b/integration/local/src/DocAnnotationsTests.scala
index 1b7e2816f6f..3680f006245 100644
--- a/integration/local/src/DocAnnotationsTests.scala
+++ b/integration/local/src/DocAnnotationsTests.scala
@@ -10,7 +10,8 @@ class DocAnnotationsTests(fork: Boolean) extends ScriptTestSuite(fork) {
   val tests = Tests {
     initWorkspace()
     "test" - {
-      assert(eval("inspect", "core.test.ivyDeps"))
+      val res = eval("inspect", "core.test.ivyDeps")
+      assert(res == true)
       val inheritedIvyDeps = ujson.read(meta("inspect"))("value").str
       assert(
         inheritedIvyDeps.contains("core.test.ivyDeps"),
diff --git a/integration/local/src/HygieneTests.scala b/integration/local/src/HygieneTests.scala
index cae9b4546c8..a902452de4f 100644
--- a/integration/local/src/HygieneTests.scala
+++ b/integration/local/src/HygieneTests.scala
@@ -5,14 +5,17 @@ import utest._
 
 class HygieneTests(fork: Boolean) extends ScriptTestSuite(fork) {
   override def workspaceSlug: String = "hygiene"
-  override def workspacePath: os.Path = os.Path(sys.props.getOrElse("MILL_WORKSPACE_PATH", ???)) / getClass().getName()
-  override def scriptSourcePath: os.Path = os.pwd / "integration" / "local" / "resources" / workspaceSlug
+  override def workspacePath: os.Path =
+    os.Path(sys.props.getOrElse("MILL_WORKSPACE_PATH", ???)) / getClass().getName()
+  override def scriptSourcePath: os.Path =
+    os.pwd / "integration" / "local" / "resources" / workspaceSlug
 
   val tests = Tests {
     initWorkspace()
 
     test {
-      assert(eval("scala.foo"))
+      val res = eval("scala.foo")
+      assert(res == true)
       val output = meta("scala.foo")
       assert(output.contains("\"fooValue\""))
     }