diff --git a/src/calibre/ebooks/metadata/pdf.py b/src/calibre/ebooks/metadata/pdf.py
index 7c68e9ac7e..ab40c5d80c 100644
--- a/src/calibre/ebooks/metadata/pdf.py
+++ b/src/calibre/ebooks/metadata/pdf.py
@@ -35,7 +35,7 @@ def read_info(outputdir, get_cover):
     ans = {}
 
     try:
-        raw = subprocess.check_output([pdfinfo, '-enc', 'UTF-8', 'src.pdf'])
+        raw = subprocess.check_output([pdfinfo, '-enc', 'UTF-8', '-isodates', 'src.pdf'])
     except subprocess.CalledProcessError as e:
         prints('pdfinfo errored out with return code: %d'%e.returncode)
         return None
@@ -165,6 +165,7 @@ def get_metadata(stream, cover=True):
         mi.cover_data = ('jpeg', cdata)
     return mi
 
+
 get_quick_metadata = partial(get_metadata, cover=False)
 
 from calibre.utils.podofo import set_metadata as podofo_set_metadata
@@ -173,5 +174,3 @@ from calibre.utils.podofo import set_metadata as podofo_set_metadata
 def set_metadata(stream, mi):
     stream.seek(0)
     return podofo_set_metadata(stream, mi)
-
-