diff --git a/notecard/notecard.py b/notecard/notecard.py
index 357a3e0..8e15d42 100644
--- a/notecard/notecard.py
+++ b/notecard/notecard.py
@@ -702,6 +702,8 @@ def _transact(self, req_bytes, rsp_expected,
         # Notecard with requests.
         time.sleep(0.005)
 
+        # Query the Notecard every 50 ms to see if there's data available to
+        # read.
         start = start_timeout()
         available = 0
         while available == 0:
@@ -711,6 +713,8 @@ def _transact(self, req_bytes, rsp_expected,
                 raise Exception('Timed out while querying Notecard for ' + \
                                 'available data.')
 
+            time.sleep(0.05)
+
         return self.receive()
 
     def Reset(self):