diff --git a/internal/platform/files_rm.go b/internal/platform/files_rm.go
index 4efd9386..91e63f72 100644
--- a/internal/platform/files_rm.go
+++ b/internal/platform/files_rm.go
@@ -12,9 +12,12 @@ import (
 const (
 	rmFileLimit = 10000
 	rmBatchSize = 100
-	rmTimeLimit = 5 * time.Second
 )
 
+// rmTimeLimit bounds one inspection. A variable so tests on slow CI runners,
+// where Restart Manager can take seconds to answer, can allow more time.
+var rmTimeLimit = 5 * time.Second
+
 // restartManager is deliberately independent of the Windows ABI so bounded
 // enumeration and fail-closed behavior can be tested on every platform.
 type restartManager interface {
diff --git a/internal/platform/files_windows_test.go b/internal/platform/files_windows_test.go
index 588c5d71..486f741d 100644
--- a/internal/platform/files_windows_test.go
+++ b/internal/platform/files_windows_test.go
@@ -26,6 +26,9 @@ func TestRestartManagerOwnedFileHelper(t *testing.T) {
 }
 
 func TestWindowsOpenFilesOwnedChild(t *testing.T) {
+	limit := rmTimeLimit
+	rmTimeLimit = 25 * time.Second
+	t.Cleanup(func() { rmTimeLimit = limit })
 	dir := t.TempDir()
 	name := filepath.Join(dir, "owned 子.txt")
 	if err := os.WriteFile(name, []byte("owned"), 0600); err != nil {