diff --git a/amodem/recv.py b/amodem/recv.py
index d58cd2c..dc6521d 100644
--- a/amodem/recv.py
+++ b/amodem/recv.py
@@ -152,7 +152,7 @@ class Receiver(object):
         sampler.freq -= 0.01 * err * self.Tsym
         sampler.offset -= err
         log.debug(
-            'Got  %8.1f kB, realtime: %6.2f%%, drift: %+5.2f ppm',
+            'Got  %10.3f kB, realtime: %6.2f%%, drift: %+5.2f ppm',
             self.stats['rx_bits'] / 8e3,
             duration * 100.0 / (iter_index * self.Tsym),
             (1.0 - sampler.freq) * 1e6
diff --git a/amodem/send.py b/amodem/send.py
index c2859ab..0d8df8d 100644
--- a/amodem/send.py
+++ b/amodem/send.py
@@ -47,7 +47,7 @@ class Sender(object):
             self.write(np.dot(symbols, self.carriers))
             if i % self.iters_per_report == 0:
                 total_bits = i * Nfreq * self.modem.bits_per_symbol
-                log.debug('Sent %8.1f kB', total_bits / 8e3)
+                log.debug('Sent %10.3f kB', total_bits / 8e3)
 
 
 def main(config, src, dst):