diff --git a/source/games/duke/src/actors.cpp b/source/games/duke/src/actors.cpp
index 58b8f75e4..18c99c741 100644
--- a/source/games/duke/src/actors.cpp
+++ b/source/games/duke/src/actors.cpp
@@ -245,10 +245,9 @@ void insertspriteq(DDukeActor* const actor)
 	{
 		if (spriteq[spriteqloc] != nullptr)
 		{
-			// Why is this not deleted here?
-			// Also todo: Make list size a CVAR.
+			// todo: Make list size a CVAR.
 			spriteq[spriteqloc]->s->xrepeat = 0;
-			// deletesprite(spriteq[spriteqloc]);
+			deletesprite(spriteq[spriteqloc]);
 		}
 		spriteq[spriteqloc] = actor;
 		spriteqloc = (spriteqloc + 1) % spriteqamount;
@@ -779,7 +778,8 @@ void movecrane(DDukeActor *actor, int crane)
 	else if (t[0] == 9)
 		t[0] = 0;
 
-	SetActor(cpt.poleactor, { spri->x, spri->y, spri->z - (34 << 8) });
+	if (cpt.poleactor)
+		SetActor(cpt.poleactor, { spri->x, spri->y, spri->z - (34 << 8) });
 
 	auto Owner = actor->GetOwner();
 	if (Owner != nullptr || actor->IsActiveCrane())
diff --git a/source/games/duke/src/animatesprites_d.cpp b/source/games/duke/src/animatesprites_d.cpp
index 7048f5150..ad3abf644 100644
--- a/source/games/duke/src/animatesprites_d.cpp
+++ b/source/games/duke/src/animatesprites_d.cpp
@@ -248,14 +248,14 @@ void animatesprites_d(tspritetype* tsprite, int& spritesortcnt, int x, int y, in
 			continue;
 		case VIEWSCREEN:
 		case VIEWSCREEN2:
-			if (camsprite != nullptr && h->GetHitOwner()->temp_data[0] == 1)
+			if (camsprite != nullptr && h->GetHitOwner() && h->GetHitOwner()->temp_data[0] == 1)
 			{
 				t->picnum = STATIC;
 				t->cstat |= (rand() & 12);
 				t->xrepeat += 8;
 				t->yrepeat += 8;
 			}
-			else if (camsprite == h->GetHitOwner())
+			else if (camsprite && camsprite == h->GetHitOwner())
 			{
 				t->picnum = TILE_VIEWSCR;
 			}
diff --git a/source/games/duke/src/sounds.cpp b/source/games/duke/src/sounds.cpp
index 73818dccf..b1ec56fc5 100644
--- a/source/games/duke/src/sounds.cpp
+++ b/source/games/duke/src/sounds.cpp
@@ -113,7 +113,7 @@ public:
 		{
 			UnloadSound(schan->SoundID);
 			currentCommentarySound = 0;
-			currentCommentarySprite->s->picnum = DEVELOPERCOMMENTARY;
+			if (currentCommentarySprite) currentCommentarySprite->s->picnum = DEVELOPERCOMMENTARY;
 			I_SetRelativeVolume(1.0f);
 			UnmuteSounds();
 		}
diff --git a/source/games/duke/src/spawn.cpp b/source/games/duke/src/spawn.cpp
index 67195ab01..dacd5cbc0 100644
--- a/source/games/duke/src/spawn.cpp
+++ b/source/games/duke/src/spawn.cpp
@@ -500,6 +500,7 @@ void initcrane(DDukeActor* actj, DDukeActor* acti, int CRANEPOLE)
 	apt.x = sp->x;
 	apt.y = sp->y;
 	apt.z = sp->z;
+	apt.poleactor = nullptr;
 
 	DukeStatIterator it(STAT_DEFAULT);
 	while (auto act = it.Next())