diff --git a/src/industry_cmd.cpp b/src/industry_cmd.cpp
--- a/src/industry_cmd.cpp
+++ b/src/industry_cmd.cpp
@@ -1995,7 +1995,7 @@ static uint GetNumberOfIndustries()
 
 	assert(lengthof(numof_industry_table) == ID_END);
 	uint difficulty = (_game_mode != GM_EDITOR) ? _settings_game.difficulty.industry_density : (uint)ID_VERY_LOW;
-	return ScaleByMapSize(numof_industry_table[difficulty]);
+	return min(IndustryPool::MAX_SIZE, ScaleByMapSize(numof_industry_table[difficulty]));
 }
 
 /**