diff --git a/engines/lab/processroom.cpp b/engines/lab/processroom.cpp
index 7b9e4132c96..c754d288b7e 100644
--- a/engines/lab/processroom.cpp
+++ b/engines/lab/processroom.cpp
@@ -180,17 +180,7 @@ void LabEngine::drawDirection(CloseDataPtr closePtr) {
  */
 uint16 LabEngine::processArrow(uint16 curDirection, uint16 arrow) {
 	if (arrow == 1) { // Forward
-		uint16 room = 1;
-
-		if (curDirection == NORTH)
-			room = _rooms[_roomNum]._northDoor;
-		else if (curDirection == SOUTH)
-			room = _rooms[_roomNum]._southDoor;
-		else if (curDirection == EAST)
-			room = _rooms[_roomNum]._eastDoor;
-		else if (curDirection == WEST)
-			room = _rooms[_roomNum]._westDoor;
-
+		uint16 room = _rooms[_roomNum]._doors[curDirection];
 		if (room != 0)
 			_roomNum = room;
 
diff --git a/engines/lab/processroom.h b/engines/lab/processroom.h
index 97c7cdce4fb..1d3316ed7ec 100644
--- a/engines/lab/processroom.h
+++ b/engines/lab/processroom.h
@@ -127,10 +127,7 @@ struct Rule {
 };
 
 struct RoomData {
-	uint16 _northDoor;
-	uint16 _southDoor;
-	uint16 _eastDoor;
-	uint16 _westDoor;
+	uint16 _doors[4];
 	byte _transitionType;
 	ViewData *_view[4];
 	RuleList *_rules;
diff --git a/engines/lab/resource.cpp b/engines/lab/resource.cpp
index 3f615c7a7a1..cb29bc64076 100644
--- a/engines/lab/resource.cpp
+++ b/engines/lab/resource.cpp
@@ -98,10 +98,10 @@ bool Resource::readRoomData(const char *fileName) {
 	memset(_vm->_rooms, 0, (_vm->_manyRooms + 1) * sizeof(RoomData));
 
 	for (uint16 i = 1; i <= _vm->_manyRooms; i++) {
-		_vm->_rooms[i]._northDoor = dataFile->readUint16LE();
-		_vm->_rooms[i]._southDoor = dataFile->readUint16LE();
-		_vm->_rooms[i]._eastDoor = dataFile->readUint16LE();
-		_vm->_rooms[i]._westDoor = dataFile->readUint16LE();
+		_vm->_rooms[i]._doors[NORTH] = dataFile->readUint16LE();
+		_vm->_rooms[i]._doors[SOUTH] = dataFile->readUint16LE();
+		_vm->_rooms[i]._doors[EAST] = dataFile->readUint16LE();
+		_vm->_rooms[i]._doors[WEST] = dataFile->readUint16LE();
 		_vm->_rooms[i]._transitionType = dataFile->readByte();
 
 		_vm->_rooms[i]._view[NORTH] = nullptr;