diff --git a/src/columns/Column.cpp b/src/columns/Column.cpp
index c91b25d84..35cf0172c 100644
--- a/src/columns/Column.cpp
+++ b/src/columns/Column.cpp
@@ -162,7 +162,7 @@ void Column::uda (std::map <std::string, Column*>& all)
   for (const auto& uda : udas)
   {
     if (all.find (uda) != all.end ())
-      throw format (STRING_UDA_COLLISION, uda);
+      throw format ("The UDA named '{1}' is the same as a core attribute, and is not permitted.", uda);
 
     Column* c = Column::uda (uda);
     if (c)
diff --git a/src/l10n/deu-DEU.h b/src/l10n/deu-DEU.h
index 201e06623..4bd2f36e6 100644
--- a/src/l10n/deu-DEU.h
+++ b/src/l10n/deu-DEU.h
@@ -471,7 +471,6 @@
 
 // Errors
 // TODO Move each of these to appropriate section.
-#define STRING_UDA_COLLISION         "Das UDA '{1}' hat den selben Namen wie eine eingebaute Eigenschaft, und ist daher nicht erlaubt."
 #define STRING_INVALID_MOD           "Die '{1}'-Eigenschaft erlaubt keinen Wert '{2}'."
 #define STRING_ERROR_DETAILS         "Die Option 'calendar.details.report' muss einen einzelnen Report-Namen enthalten."
 #define STRING_ERROR_NO_FILTER       "Command line filters are not supported by this command."
diff --git a/src/l10n/eng-USA.h b/src/l10n/eng-USA.h
index 2d4e2a746..eae416122 100644
--- a/src/l10n/eng-USA.h
+++ b/src/l10n/eng-USA.h
@@ -468,7 +468,6 @@
 
 // Errors
 // TODO Move each of these to appropriate section.
-#define STRING_UDA_COLLISION         "The UDA named '{1}' is the same as a core attribute, and is not permitted."
 #define STRING_INVALID_MOD           "The '{1}' attribute does not allow a value of '{2}'."
 #define STRING_ERROR_DETAILS         "The setting 'calendar.details.report' must contain a single report name."
 #define STRING_ERROR_NO_FILTER       "Command line filters are not supported by this command."
diff --git a/src/l10n/epo-RUS.h b/src/l10n/epo-RUS.h
index 0e4ddd42d..6059aba87 100644
--- a/src/l10n/epo-RUS.h
+++ b/src/l10n/epo-RUS.h
@@ -471,7 +471,6 @@
 
 // Errors
 // TODO Move each of these to appropriate section.
-#define STRING_UDA_COLLISION         "UDA '{1}' kaj enkonstruita atributo havas la saman nomon.  Tio estas malpermesita."
 #define STRING_INVALID_MOD           "Atributo '{1}' ne permesas valoron '{2}'."
 #define STRING_ERROR_DETAILS         "Agordo 'calendar.details.report' devas enhavi sole unu raportnomon."
 #define STRING_ERROR_NO_FILTER       "Command line filters are not supported by this command."
diff --git a/src/l10n/esp-ESP.h b/src/l10n/esp-ESP.h
index 70d942fb4..6d15d8683 100644
--- a/src/l10n/esp-ESP.h
+++ b/src/l10n/esp-ESP.h
@@ -483,7 +483,6 @@
 
 // Errors
 // TODO Move each of these to appropriate section.
-#define STRING_UDA_COLLISION         "El UDA denominado '{1}' es el mismo que un atributo del núcleo, y no está permitido."
 #define STRING_INVALID_MOD           "El atributo '{1}' no admite un valor '{2}'."
 #define STRING_ERROR_DETAILS         "El ajuste 'calendar.details.report' debe contener un único nombre de informe."
 #define STRING_ERROR_NO_FILTER       "Los filtros de línea de comando no están soportados por este comando."
diff --git a/src/l10n/fra-FRA.h b/src/l10n/fra-FRA.h
index 483acfdc5..841be01a1 100644
--- a/src/l10n/fra-FRA.h
+++ b/src/l10n/fra-FRA.h
@@ -493,7 +493,6 @@
 
 // Errors
 // TODO Move each of these to appropriate section.
-#define STRING_UDA_COLLISION         "L'ADU nommé '{1}' est le même qu'un attribut du noyau, et ce n'est pas autorisé."
 #define STRING_INVALID_MOD           "The '{1}' attribute does not allow a value of '{2}'."
 #define STRING_ERROR_DETAILS         "The setting 'calendar.details.report' must contain a single report name."
 #define STRING_ERROR_NO_FILTER       "Command line filters are not supported by this command."
diff --git a/src/l10n/ita-ITA.h b/src/l10n/ita-ITA.h
index 7134a3ce2..97dae78a3 100644
--- a/src/l10n/ita-ITA.h
+++ b/src/l10n/ita-ITA.h
@@ -472,7 +472,6 @@
 
 // Errors
 // TODO Move each of these to appropriate section.
-#define STRING_UDA_COLLISION         "L'UDA '{1}' ha lo stesso nome di un attributo di sistema, e ciò non è permesso."
 #define STRING_INVALID_MOD           "L'attributo '{1}' non ammette un valore pari a '{2}'."
 #define STRING_ERROR_DETAILS         "The setting 'calendar.details.report' must contain a single report name."
 #define STRING_ERROR_NO_FILTER       "Command line filters are not supported by this command."
diff --git a/src/l10n/jpn-JPN.h b/src/l10n/jpn-JPN.h
index 9b00079c3..36864266d 100644
--- a/src/l10n/jpn-JPN.h
+++ b/src/l10n/jpn-JPN.h
@@ -473,7 +473,6 @@
 
 // Errors
 // TODO Move each of these to appropriate section.
-#define STRING_UDA_COLLISION         "The UDA named '{1}' is the same as a core attribute, and is not permitted."
 #define STRING_INVALID_MOD           "The '{1}' attribute does not allow a value of '{2}'."
 #define STRING_ERROR_DETAILS         "The setting 'calendar.details.report' must contain a single report name."
 #define STRING_ERROR_NO_FILTER       "Command line filters are not supported by this command."
diff --git a/src/l10n/pol-POL.h b/src/l10n/pol-POL.h
index 0a51c00b9..d990c58af 100644
--- a/src/l10n/pol-POL.h
+++ b/src/l10n/pol-POL.h
@@ -473,7 +473,6 @@
 
 // Errors
 // TODO Move each of these to appropriate section.
-#define STRING_UDA_COLLISION         "Nazwa UDA '{1}' jest jedną z nazw atrybutów podstawowych i dlatego jest niedozwolona."
 #define STRING_INVALID_MOD           "Atrybut '{1}' nie zezwala na wartość '{2}'."
 #define STRING_ERROR_DETAILS         "Zmienna 'calendar.details.report' musi zawierać nazwę raportu."
 #define STRING_ERROR_NO_FILTER       "Command line filters are not supported by this command."
diff --git a/src/l10n/por-PRT.h b/src/l10n/por-PRT.h
index ce74d21e0..f946dfcea 100644
--- a/src/l10n/por-PRT.h
+++ b/src/l10n/por-PRT.h
@@ -473,7 +473,6 @@
 
 // Errors
 // TODO Move each of these to appropriate section.
-#define STRING_UDA_COLLISION         "O UDA '{1}' tem o mesmo nome que um atributo interno, tal não é permitido."
 #define STRING_INVALID_MOD           "O atributo '{1}' não permite o valor '{2}'."
 #define STRING_ERROR_DETAILS         "A definição 'calendar.details.report' pode apenas indicar um nome de relatório."
 #define STRING_ERROR_NO_FILTER       "Command line filters are not supported by this command."