diff --git a/src/common/utility/tarray.h b/src/common/utility/tarray.h
index a1829e79e..b6e852fe5 100644
--- a/src/common/utility/tarray.h
+++ b/src/common/utility/tarray.h
@@ -664,6 +664,15 @@ public:
 		Insert (SortedFind (item, std::forward<Func>(lt), false), item);
 	}
 
+	void SortedInsertUnique(const T &item)
+	{
+		int foundIndex = SortedFind (item, false);
+		if (foundIndex >= Count || Array[foundIndex] != item)
+		{
+			Insert (foundIndex, item);
+		}
+	}
+
 	void ShrinkToFit ()
 	{
 		if (Most > Count)
diff --git a/src/rendering/hwrenderer/scene/hw_sprites.cpp b/src/rendering/hwrenderer/scene/hw_sprites.cpp
index fdd95b1be..84a4800f7 100644
--- a/src/rendering/hwrenderer/scene/hw_sprites.cpp
+++ b/src/rendering/hwrenderer/scene/hw_sprites.cpp
@@ -876,7 +876,7 @@ void HWSprite::Process(HWDrawInfo *di, FRenderState& state, AActor* thing, secto
 
 	if (thing->IsKindOf(NAME_Corona))
 	{
-		Coronas.Push(thing);
+		Coronas.SortedInsertUnique(thing);
 		return;
 	}