diff --git a/DMRSlot.cpp b/DMRSlot.cpp
index 4844279..6b1b253 100644
--- a/DMRSlot.cpp
+++ b/DMRSlot.cpp
@@ -362,8 +362,12 @@ void CDMRSlot::writeModem(unsigned char *data)
 				CDMRTrellis trellis;
 				unsigned char payload[18U];
 				bool ret = trellis.decode(data + 2U, payload);
-				if (ret)
+				if (ret) {
 					trellis.encode(payload, data + 2U);
+				} else {
+					LogDebug("DMR Slot %u, unfixable rate 3/4 data", m_slotNo);
+					CUtils::dump(1U, "Data", data + 2U, DMR_FRAME_LENGTH_BYTES);
+				}
 			}
 
 			// Regenerate the Slot Type