diff --git a/utils/generateSwagger.py b/utils/generateSwagger.py
index 3d909c18b7..7414bd52c3 100755
--- a/utils/generateSwagger.py
+++ b/utils/generateSwagger.py
@@ -484,7 +484,7 @@ def start_docublock(cargo, r=Regexen()):
         else:
           currentDocuBlock = last.split(' ')[1].rstrip()
     except Exception as x:
-        print >> sys.stderr, "failed to fetch docublock in '" + last + "'"
+        print >> sys.stderr, "failed to fetch docublock in '" + last + "': " + str(x)
         raise
 
     return generic_handler(cargo, r, 'start_docublock')