1 files changed, 2 insertions, 0 deletions
diff --git a/python3/sha3sum.py b/python3/sha3sum.py
index eba5ecd..83d5af9 100755
--- a/python3/sha3sum.py
+++ b/python3/sha3sum.py
@@ -894,6 +894,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
                     blksize = 4096
                     try:
                         blksize = os.stat(os.path.realpath(fn)).st_blksize
+                        if blksize <= 0:
+                            blksize = 4096
                     except:
                         pass
                     while True: