diff --git a/framefileio.cpp b/framefileio.cpp
index 38ed8c3..24090d8 100644
--- a/framefileio.cpp
+++ b/framefileio.cpp
@@ -1454,7 +1454,8 @@ bool FrameFileIO::loadPCANFile(QString filename, QVector<CANFrame>* frames)
                         QByteArray bytes(numBytes, 0);
                         thisFrame.isReceived = true;
                         thisFrame.bus = 0;
-                        if (thisFrame.frameId() > 0x10000000)
+                        if ((thisFrame.frameId() > 0x10000000) ||
+			    (tokens[3].length() >= 8))
                         {
                             thisFrame.setExtendedFrameFormat(true);
                         }
@@ -1506,7 +1507,8 @@ bool FrameFileIO::loadPCANFile(QString filename, QVector<CANFrame>* frames)
                         //qDebug() << thisFrame.payload().length();
                         thisFrame.isReceived = true;
                         thisFrame.bus = tokens[2].toInt();
-                        if (thisFrame.frameId() > 0x10000000)
+                        if ((thisFrame.frameId() > 0x10000000) ||
+			    (tokens[4].length() >= 8))
                         {
                             thisFrame.setExtendedFrameFormat(true);
                         }
@@ -1548,7 +1550,8 @@ bool FrameFileIO::loadPCANFile(QString filename, QVector<CANFrame>* frames)
                         //qDebug() << thisFrame.payload().length();
                         thisFrame.isReceived = true;
                         thisFrame.bus = 0;
-                        if (thisFrame.frameId() > 0x10000000)
+                        if ((thisFrame.frameId() > 0x10000000) ||
+			    (tokens[3].length() >= 8))
                         {
                             thisFrame.setExtendedFrameFormat(true);
                         }
@@ -1600,7 +1603,8 @@ bool FrameFileIO::loadPCANFile(QString filename, QVector<CANFrame>* frames)
                         //qDebug() << thisFrame.payload().length();
                         thisFrame.isReceived = true;
                         thisFrame.bus = tokens[3].toInt();
-                        if (thisFrame.frameId() > 0x10000000)
+                        if ((thisFrame.frameId() > 0x10000000) ||
+			    (tokens[4].length() >= 8))
                         {
                             thisFrame.setExtendedFrameFormat(true);
                         }