diff --git a/poky/scripts/oe-depends-dot b/poky/scripts/oe-depends-dot
index 1c2d51c..d02ee45 100755
--- a/poky/scripts/oe-depends-dot
+++ b/poky/scripts/oe-depends-dot
@@ -14,7 +14,7 @@
 class Dot(object):
     def __init__(self):
         parser = argparse.ArgumentParser(
-            description="Analyse recipe-depends.dot generated by bitbake -g",
+            description="Analyse task-depends.dot generated by bitbake -g",
             formatter_class=argparse.RawDescriptionHelpFormatter)
         parser.add_argument("dotfile",
             help = "Specify the dotfile", nargs = 1, action='store', default='')
@@ -159,9 +159,14 @@
 
         reverse_deps = []
         if self.args.why:
-            for k, v in depends.items():
-                if self.args.key in v and not k in reverse_deps:
-                    reverse_deps.append(k)
+            key_list = [self.args.key]
+            current_key = self.args.key
+            while (len(key_list) != 0):
+                current_key = key_list.pop()
+                for k, v in depends.items():
+                    if current_key in v and not k in reverse_deps:
+                        reverse_deps.append(k)
+                        key_list.append(k)
             print('Because: %s' % ' '.join(reverse_deps))
             Dot.print_dep_chains(self.args.key, reverse_deps, depends)