diff --git a/engines/chewy/global.h b/engines/chewy/global.h
index be749241933..2773713e3c9 100644
--- a/engines/chewy/global.h
+++ b/engines/chewy/global.h
@@ -109,7 +109,6 @@ public:
 	int16 _r65tmp_ho_x = 0;
 	int16 _r65tmp_ho_y = 0;
 	int16 _r68HohesC = 0;
-	bool _r51onOff[5] = {false};
 };
 
 extern Globals *g_globals;
diff --git a/engines/chewy/rooms/room51.cpp b/engines/chewy/rooms/room51.cpp
index 253a77b1a98..a69df315114 100644
--- a/engines/chewy/rooms/room51.cpp
+++ b/engines/chewy/rooms/room51.cpp
@@ -39,7 +39,7 @@ static const AniBlock ABLOCK37[5] = {
 };
 
 bool Room51::_flag;
-bool Room51::_arr[2];
+bool Room51::_enemyFlag[2];
 int16 Room51::_tmpx;
 int16 Room51::_tmpy;
 int Room51::_index;
@@ -64,7 +64,7 @@ void Room51::entry() {
 		hide_cur();
 
 		for (int i = 0; i < 2; ++i) {
-			_arr[i] = false;
+			_enemyFlag[i] = false;
 			_G(timer_nr)[i] = room->set_timer(i + 9, i * 2 + 6);
 		}
 
@@ -353,15 +353,15 @@ int16 Room51::cut_serv(int16 frame) {
 
 void Room51::timer_action(int16 t_nr, int16 obj_nr) {
 	if (obj_nr == 9 || obj_nr == 10) {
-		assert(t_nr >= 0 && t_nr < 5);
-		if (!_G(r51onOff)[t_nr]) {
-			det->start_detail(t_nr, 1, ANI_VOR);
-			_G(r51onOff)[t_nr] = true;
-		} else if (!det->get_ani_status(t_nr)) {
-			det->start_detail(t_nr, 1, ANI_GO);
-			det->start_detail(t_nr + 2, 1, ANI_VOR);
-			uhr->reset_timer(obj_nr, 0);
-			_G(r51onOff)[t_nr] = false;
+		if (!_enemyFlag[obj_nr - 9]) {
+			det->start_detail(obj_nr, 1, ANI_VOR);
+			_enemyFlag[obj_nr - 9] = true;
+
+		} else if (!det->get_ani_status(obj_nr)) {
+			det->start_detail(obj_nr, 1, ANI_GO);
+			det->start_detail(obj_nr + 2, 1, ANI_VOR);
+			uhr->reset_timer(t_nr, 0);
+			_enemyFlag[obj_nr - 9] = false;
 		}
 	}
 }
diff --git a/engines/chewy/rooms/room51.h b/engines/chewy/rooms/room51.h
index 382782250c5..8516eb8b333 100644
--- a/engines/chewy/rooms/room51.h
+++ b/engines/chewy/rooms/room51.h
@@ -28,7 +28,7 @@ namespace Rooms {
 class Room51 {
 private:
 	static bool _flag;
-	static bool _arr[2];
+	static bool _enemyFlag[2];
 	static int16 _tmpx, _tmpy;
 	static int _index;