diff --git a/mapeditor/mapcontroller.cpp b/mapeditor/mapcontroller.cpp
index b26bf03c1..00dcaad1c 100644
--- a/mapeditor/mapcontroller.cpp
+++ b/mapeditor/mapcontroller.cpp
@@ -272,6 +272,8 @@ void MapController::resetMapHandler()
 
 void MapController::commitTerrainChange(int level, const TerrainId & terrain)
 {
+	static const int terrainDecorationPercentageLevel = 10;
+
 	std::vector<int3> v(_scenes[level]->selectionTerrainView.selection().begin(),
 						_scenes[level]->selectionTerrainView.selection().end());
 	if(v.empty())
@@ -281,7 +283,7 @@ void MapController::commitTerrainChange(int level, const TerrainId & terrain)
 	_scenes[level]->selectionTerrainView.draw();
 	
 	_map->getEditManager()->getTerrainSelection().setSelection(v);
-	_map->getEditManager()->drawTerrain(terrain, &CRandomGenerator::getDefault());
+	_map->getEditManager()->drawTerrain(terrain, terrainDecorationPercentageLevel, &CRandomGenerator::getDefault());
 	
 	for(auto & t : v)
 		_scenes[level]->terrainView.setDirty(t);
diff --git a/test/map/CMapEditManagerTest.cpp b/test/map/CMapEditManagerTest.cpp
index aefffdbc2..b8ae125ca 100644
--- a/test/map/CMapEditManagerTest.cpp
+++ b/test/map/CMapEditManagerTest.cpp
@@ -34,7 +34,7 @@ TEST(MapManager, DrawTerrain_Type)
 
 		// 1x1 Blow up
 		editManager->getTerrainSelection().select(int3(5, 5, 0));
-		editManager->drawTerrain(ETerrainId::GRASS);
+		editManager->drawTerrain(ETerrainId::GRASS, 10);
 		static const int3 squareCheck[] = { int3(5,5,0), int3(5,4,0), int3(4,4,0), int3(4,5,0) };
 		for(const auto & tile : squareCheck)
 		{
@@ -43,20 +43,20 @@ TEST(MapManager, DrawTerrain_Type)
 
 		// Concat to square
 		editManager->getTerrainSelection().select(int3(6, 5, 0));
-		editManager->drawTerrain(ETerrainId::GRASS);
+		editManager->drawTerrain(ETerrainId::GRASS, 10);
 		EXPECT_EQ(map->getTile(int3(6, 4, 0)).terType->getId(), ETerrainId::GRASS);
 		editManager->getTerrainSelection().select(int3(6, 5, 0));
-		editManager->drawTerrain(ETerrainId::LAVA);
+		editManager->drawTerrain(ETerrainId::LAVA, 10);
 		EXPECT_EQ(map->getTile(int3(4, 4, 0)).terType->getId(), ETerrainId::GRASS);
 		EXPECT_EQ(map->getTile(int3(7, 4, 0)).terType->getId(), ETerrainId::LAVA);
 
 		// Special case water,rock
 		editManager->getTerrainSelection().selectRange(MapRect(int3(10, 10, 0), 10, 5));
-		editManager->drawTerrain(ETerrainId::GRASS);
+		editManager->drawTerrain(ETerrainId::GRASS, 10);
 		editManager->getTerrainSelection().selectRange(MapRect(int3(15, 17, 0), 10, 5));
-		editManager->drawTerrain(ETerrainId::GRASS);
+		editManager->drawTerrain(ETerrainId::GRASS, 10);
 		editManager->getTerrainSelection().select(int3(21, 16, 0));
-		editManager->drawTerrain(ETerrainId::GRASS);
+		editManager->drawTerrain(ETerrainId::GRASS, 10);
 		EXPECT_EQ(map->getTile(int3(20, 15, 0)).terType->getId(), ETerrainId::GRASS);
 
 		// Special case non water,rock
@@ -67,16 +67,16 @@ TEST(MapManager, DrawTerrain_Type)
 		{
 			editManager->getTerrainSelection().select(tile);
 		}
-		editManager->drawTerrain(ETerrainId::GRASS);
+		editManager->drawTerrain(ETerrainId::GRASS, 10);
 		EXPECT_EQ(map->getTile(int3(35, 44, 0)).terType->getId(), ETerrainId::WATER);
 
 		// Rock case
 		editManager->getTerrainSelection().selectRange(MapRect(int3(1, 1, 1), 15, 15));
-		editManager->drawTerrain(ETerrainId::SUBTERRANEAN);
+		editManager->drawTerrain(ETerrainId::SUBTERRANEAN, 10);
 		std::vector<int3> vec({ int3(6, 6, 1), int3(7, 6, 1), int3(8, 6, 1), int3(5, 7, 1), int3(6, 7, 1), int3(7, 7, 1),
 								int3(8, 7, 1), int3(4, 8, 1), int3(5, 8, 1), int3(6, 8, 1)});
 		editManager->getTerrainSelection().setSelection(vec);
-		editManager->drawTerrain(ETerrainId::ROCK);
+		editManager->drawTerrain(ETerrainId::ROCK, 10);
 		EXPECT_TRUE(!map->getTile(int3(5, 6, 1)).terType->isPassable() || !map->getTile(int3(7, 8, 1)).terType->isPassable());
 
 		//todo: add checks here and enable, also use smaller size
@@ -144,7 +144,7 @@ TEST(MapManager, DrawTerrain_View)
 				int3 pos((si32)posVector[0].Float(), (si32)posVector[1].Float(), (si32)posVector[2].Float());
 				const auto & originalTile = originalMap->getTile(pos);
 				editManager->getTerrainSelection().selectRange(MapRect(pos, 1, 1));
-				editManager->drawTerrain(originalTile.terType->getId(), &gen);
+				editManager->drawTerrain(originalTile.terType->getId(), 10, &gen);
 				const auto & tile = map->getTile(pos);
 				bool isInRange = false;
 				for(const auto & range : mapping)