diff --git a/provisioner/ansible-local/provisioner.go b/provisioner/ansible-local/provisioner.go
index c3484381a..2f6a873f9 100644
--- a/provisioner/ansible-local/provisioner.go
+++ b/provisioner/ansible-local/provisioner.go
@@ -86,7 +86,7 @@ func (p *Provisioner) Prepare(raws ...interface{}) error {
 	}
 
 	if p.config.StagingDir == "" {
-		p.config.StagingDir = filepath.Join(DefaultStagingDir, uuid.TimeOrderedUUID())
+		p.config.StagingDir = filepath.ToSlash(filepath.Join(DefaultStagingDir, uuid.TimeOrderedUUID()))
 	}
 
 	// Validation