diff --git a/config.go b/config.go
index 8de9bf7..6ee383c 100644
--- a/config.go
+++ b/config.go
@@ -25,14 +25,17 @@ package main
 import "fmt"
 
 type config struct {
-	Tasks map[string]task
+	Tasks        map[string]task
+	tasksHandled map[string]bool
 }
 
 func (this *config) process(srcDir, dstDir, taskName string, flags int) error {
+	this.tasksHandled = make(map[string]bool)
+
 	task, ok := this.Tasks[taskName]
 	if !ok {
 		return fmt.Errorf("task not found %s", taskName)
 	}
 
-	return task.process(srcDir, dstDir, this, flags)
+	return task.process(taskName, srcDir, dstDir, this, flags)
 }
diff --git a/task.go b/task.go
index 618a181..848bcf6 100644
--- a/task.go
+++ b/task.go
@@ -30,14 +30,21 @@ type task struct {
 	Cmds  []command
 }
 
-func (this *task) process(srcDir, dstDir string, conf *config, flags int) error {
+func (this *task) process(taskName, srcDir, dstDir string, conf *config, flags int) error {
+	handled, ok := conf.tasksHandled[taskName]
+	if ok && handled {
+		return nil
+	}
+
+	conf.tasksHandled[taskName] = true
+
 	for _, depName := range this.Deps {
 		depTask, ok := conf.Tasks[depName]
 		if !ok {
 			return fmt.Errorf("task dependency not found %s", depName)
 		}
 
-		if err := depTask.process(srcDir, dstDir, conf, flags); err != nil {
+		if err := depTask.process(depName, srcDir, dstDir, conf, flags); err != nil {
 			return err
 		}
 	}