diff --git a/DMRDataHeader.cpp b/DMRDataHeader.cpp
index 246ba4e..d1864a5 100644
--- a/DMRDataHeader.cpp
+++ b/DMRDataHeader.cpp
@@ -130,7 +130,7 @@ bool CDMRDataHeader::put(const unsigned char* bytes)
 		unsigned char format = m_data[1U] & 0x0FU;
 		if (format == UDTF_NMEA) {
 			LogDebug("DMR, fixing broken Tytera MD-390 GPS data block count");
-			m_blocks = 2U;
+			m_blocks = 3U;
 		}
 	}