diff --git a/src/ai/api/ai_cargo.cpp b/src/ai/api/ai_cargo.cpp
--- a/src/ai/api/ai_cargo.cpp
+++ b/src/ai/api/ai_cargo.cpp
@@ -22,7 +22,7 @@
 
 /* static */ bool AICargo::IsValidTownEffect(TownEffect towneffect_type)
 {
-	return (towneffect_type >= (TownEffect)TE_BEGIN && towneffect_type < (TownEffect)TE_END);
+	return (towneffect_type >= (::TownEffect)TE_BEGIN && towneffect_type < (::TownEffect)TE_END);
 }
 
 /* static */ char *AICargo::GetCargoLabel(CargoID cargo_type)
diff --git a/src/ai/api/ai_changelog.hpp b/src/ai/api/ai_changelog.hpp
--- a/src/ai/api/ai_changelog.hpp
+++ b/src/ai/api/ai_changelog.hpp
@@ -39,6 +39,7 @@
  * \li AITown::GetGrowthRate
  * \li AITown::GetLastMonthReceived
  * \li AITown::GetTownAuthority
+ * \li AITownEffectList (to walk over all available town effects)
  * \li AIVehicle::ERR_VEHICLE_TOO_LONG in case vehicle length limit is reached
  *
  * API renames: