diff --git a/src/DataFilter.cpp b/src/DataFilter.cpp
index bb7106067..a90722ead 100644
--- a/src/DataFilter.cpp
+++ b/src/DataFilter.cpp
@@ -127,7 +127,7 @@ void Leaf::validateFilter(DataFilter *df, Leaf *leaf)
     case Leaf::Function :
         {
             // is the symbol valid?
-            QRegExp bestValidSymbols("^(power|hr|cadence|speed|torque|vam|xpower|np)$", Qt::CaseInsensitive);
+            QRegExp bestValidSymbols("^(power|hr|cadence|speed|torque|vam|xpower|np|wpk)$", Qt::CaseInsensitive);
             QRegExp tizValidSymbols("^(power|hr)$", Qt::CaseInsensitive);
             QString symbol = *(leaf->series->lvalue.n);