diff --git a/src/columns/ColTags.cpp b/src/columns/ColTags.cpp
index 24fa4b718..a76779059 100644
--- a/src/columns/ColTags.cpp
+++ b/src/columns/ColTags.cpp
@@ -31,7 +31,6 @@
 #include <Eval.h>
 #include <Variant.h>
 #include <Filter.h>
-#include <Dates.h>
 #include <shared.h>
 #include <format.h>
 #include <i18n.h>
@@ -170,7 +169,6 @@ void ColumnTags::modify (Task& task, const std::string& value)
     {
       Eval e;
       e.addSource (domSource);
-      e.addSource (namedDates);
       contextTask = task;
 
       Variant v;