diff --git a/bitbake/lib/bb/runqueue.py b/bitbake/lib/bb/runqueue.py
index bf2dc5494d..0475ee2177 100644
--- a/bitbake/lib/bb/runqueue.py
+++ b/bitbake/lib/bb/runqueue.py
@@ -1224,7 +1224,7 @@ class RunQueue:
             if match is None:
                 bb.fatal("Can't find a task we're supposed to have written out? (hash: %s)?" % h)
             matches = {k : v for k, v in matches.iteritems() if h not in k}
-            if len(matches):
+            if matches:
                 latestmatch = sorted(matches.keys(), key=lambda f: matches[f])[-1]
                 prevh = __find_md5__.search(latestmatch).group(0)
                 output = bb.siggen.compare_sigfiles(latestmatch, match, recursecb)