diff --git a/libsigrokdecode4DSL/decoders/cec/pd.py b/libsigrokdecode4DSL/decoders/cec/pd.py
index 43b16a07..363a0497 100755
--- a/libsigrokdecode4DSL/decoders/cec/pd.py
+++ b/libsigrokdecode4DSL/decoders/cec/pd.py
@@ -307,6 +307,6 @@ class Decoder(srd.Decoder):
             # If there was a timeout while waiting for ACK: RESYNC.
             # Note: This is an expected situation as no new falling edge will
             # happen until next frame is transmitted.
-            if self.matched == 0b01:
+            if self.matched == 0b10:
                 self.wait({0: 'f'})
                 self.fall_end = self.samplenum