diff --git a/DSView/pv/dialogs/protocolexp.cpp b/DSView/pv/dialogs/protocolexp.cpp
index 8a94a62c..8c42a24e 100755
--- a/DSView/pv/dialogs/protocolexp.cpp
+++ b/DSView/pv/dialogs/protocolexp.cpp
@@ -157,7 +157,7 @@ void ProtocolExp::accept()
                     }
                 }
                 out << QString("%1,%2,%3\n")
-                       .arg("ID")
+                       .arg("Id")
                        .arg("Time[s]")
                        .arg(title);