diff --git a/waflib/Build.py b/waflib/Build.py
index e9263baa..92b95ff5 100644
--- a/waflib/Build.py
+++ b/waflib/Build.py
@@ -274,7 +274,7 @@ class BuildContext(Context.Context):
 			self.compile()
 		finally:
 			if self.progress_bar == 1 and sys.stderr.isatty():
-				c = len(self.returned_tasks) or 1
+				c = self.producer.processed or 1
 				m = self.progress_line(c, c, Logs.colors.BLUE, Logs.colors.NORMAL)
 				Logs.info(m, extra={'stream': sys.stderr, 'c1': Logs.colors.cursor_off, 'c2' : Logs.colors.cursor_on})
 			Logs.info("Waf: Leaving directory `%s'" % self.variant_dir)
@@ -357,7 +357,6 @@ class BuildContext(Context.Context):
 		# use another object to perform the producer-consumer logic (reduce the complexity)
 		self.producer = Runner.Parallel(self, self.jobs)
 		self.producer.biter = self.get_build_iterator()
-		self.returned_tasks = [] # not part of the API yet
 		try:
 			self.producer.start()
 		except KeyboardInterrupt:
diff --git a/waflib/Task.py b/waflib/Task.py
index 8470914a..735baca6 100644
--- a/waflib/Task.py
+++ b/waflib/Task.py
@@ -214,7 +214,6 @@ class TaskBase(evil):
 			pass
 
 		try:
-			self.generator.bld.returned_tasks.append(self)
 			self.log_display(self.generator.bld)
 			ret = self.run()
 		except Exception:
diff --git a/waflib/Tools/c_config.py b/waflib/Tools/c_config.py
index 1e34ef75..4cda8b5c 100644
--- a/waflib/Tools/c_config.py
+++ b/waflib/Tools/c_config.py
@@ -1212,7 +1212,6 @@ def multicheck(self, *k, **kw):
 	class par(object):
 		def __init__(self):
 			self.keep = False
-			self.returned_tasks = []
 			self.task_sigs = {}
 			self.progress_bar = 0
 		def total(self):
diff --git a/waflib/extras/parallel_debug.py b/waflib/extras/parallel_debug.py
index d21e845c..825e411d 100644
--- a/waflib/extras/parallel_debug.py
+++ b/waflib/extras/parallel_debug.py
@@ -222,7 +222,6 @@ def process(self):
 		pass
 
 	try:
-		self.generator.bld.returned_tasks.append(self)
 		self.log_display(self.generator.bld)
 		ret = self.run()
 	except Exception: