diff --git a/src/sqlitetablemodel.cpp b/src/sqlitetablemodel.cpp
index e8abe5b28..af10fa4aa 100644
--- a/src/sqlitetablemodel.cpp
+++ b/src/sqlitetablemodel.cpp
@@ -839,7 +839,10 @@ void SqliteTableModel::clearCache()
 
 bool SqliteTableModel::isBinary(const QModelIndex& index) const
 {
-    return m_data.at(index.row()).at(index.column()).left(1024).contains('\0');
+    // We're using the same way to detect binary data here as in the EditDialog class. For performance reasons we're only looking at
+    // the first couple of bytes though.
+    QByteArray data = m_data.at(index.row()).at(index.column()).left(512);
+    return QString(data).toUtf8() != data;
 }
 
 QByteArray SqliteTableModel::encode(const QByteArray& str) const