diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
index 975ae41..eaef4a8 100644
--- a/bitbake/lib/bb/siggen.py
+++ b/bitbake/lib/bb/siggen.py
@@ -126,7 +126,11 @@ class SignatureGeneratorBasic(SignatureGenerator):
         if variant:
             fn = "virtual:" + variant + ":" + fn
 
-        taskdeps = self._build_data(fn, d)
+        try:
+            taskdeps = self._build_data(fn, d)
+        except:
+            bb.note("Error during finalise of %s" % fn)
+            raise
 
         #Slow but can be useful for debugging mismatched basehashes
         #for task in self.taskdeps[fn]: