diff --git a/DGIdGateway/IMRSNetwork.cpp b/DGIdGateway/IMRSNetwork.cpp
index e1bac60..672c278 100644
--- a/DGIdGateway/IMRSNetwork.cpp
+++ b/DGIdGateway/IMRSNetwork.cpp
@@ -124,9 +124,9 @@ bool CIMRSNetwork::writeHeaderTrailer(IMRSDGId* ptr, CYSFFICH& fich, const unsig
 		buffer[0U] = 0x33U;
 	}
 
-	// Copy the sequence number (2 bytes)
-	buffer[1U] = (ptr->m_seqNo << 8) & 0xFFU;
-	buffer[2U] = (ptr->m_seqNo << 0) & 0xFFU;
+	// Copy the sequence number LE (2 bytes)
+	buffer[1U] = (ptr->m_seqNo << 0) & 0xFFU;
+	buffer[2U] = (ptr->m_seqNo << 8) & 0xFFU;
 
 	// Copy CSD1 and CSD2 (40 bytes)
 	CYSFPayload payload;
@@ -166,9 +166,9 @@ bool CIMRSNetwork::writeData(IMRSDGId* ptr, CYSFFICH& fich, const unsigned char*
 
 	buffer[0U] = 0x22U;
 
-	// Copy the sequence number (2 bytes)
-	buffer[1U] = (ptr->m_seqNo << 8) & 0xFFU;
-	buffer[2U] = (ptr->m_seqNo << 0) & 0xFFU;
+	// Copy the sequence number LE (2 bytes)
+	buffer[1U] = (ptr->m_seqNo << 0) & 0xFFU;
+	buffer[2U] = (ptr->m_seqNo << 8) & 0xFFU;
 
 	unsigned char dt = fich.getDT();
 	unsigned char ft = fich.getFT();
@@ -272,7 +272,7 @@ void CIMRSNetwork::readHeaderTrailer(IMRSDGId* ptr, CYSFFICH& fich, const unsign
 
 		buffer[34U] = 0x00U;
 	} else {
-		uint16_t seqNo = (data[1U] << 8) + (data[2U] << 0);
+		uint16_t seqNo = (data[1U] << 0) + (data[2U] << 8);
 		buffer[34U] = 0x01U | ((seqNo & 0x7FU) << 1);
 	}
 
@@ -309,7 +309,7 @@ void CIMRSNetwork::readData(IMRSDGId* ptr, CYSFFICH& fich, const unsigned char*
 	::memcpy(buffer + 14U, ptr->m_source, YSF_CALLSIGN_LENGTH);
 	::memcpy(buffer + 24U, ptr->m_dest,   YSF_CALLSIGN_LENGTH);
 
-	uint16_t seqNo = (data[1U] << 8) + (data[2U] << 0);
+	uint16_t seqNo = (data[1U] << 0) + (data[2U] << 8);
 	buffer[34U] = (seqNo & 0x7FU) << 1;
 
 	::memcpy(buffer + 35U, YSF_SYNC_BYTES, YSF_SYNC_LENGTH_BYTES);
diff --git a/DGIdGateway/Version.h b/DGIdGateway/Version.h
index 04ee492..62f73da 100644
--- a/DGIdGateway/Version.h
+++ b/DGIdGateway/Version.h
@@ -19,6 +19,6 @@
 #if !defined(VERSION_H)
 #define	VERSION_H
 
-const char* VERSION = "20200928";
+const char* VERSION = "20200929";
 
 #endif