diff --git a/waflib/Tools/fc.py b/waflib/Tools/fc.py
index a0280047..845b8eac 100644
--- a/waflib/Tools/fc.py
+++ b/waflib/Tools/fc.py
@@ -111,7 +111,7 @@ class fc(Task.Task):
 				if x.startswith('MOD@'):
 					name = bld.modfile(x.replace('MOD@', ''))
 					node = bld.srcnode.find_or_declare(name)
-					if not hasattr(node, 'sig'):
+					if not getattr(node, 'sig', None):
 						node.sig = Utils.SIG_NIL
 					tsk.set_outputs(node)
 					outs[id(node)].add(tsk)