diff --git a/src/fontcache/truetypefontcache.h b/src/fontcache/truetypefontcache.h
index 7af13dc149..2ce94c5d35 100644
--- a/src/fontcache/truetypefontcache.h
+++ b/src/fontcache/truetypefontcache.h
@@ -29,7 +29,7 @@ protected:
 
 	/** Container for information about a glyph. */
 	struct GlyphEntry {
-		std::unique_ptr<uint8_t[]> data; ///< The loaded sprite.
+		std::unique_ptr<std::byte[]> data; ///< The loaded sprite.
 		uint8_t width = 0; ///< The width of the glyph.
 
 		Sprite *GetSprite() { return reinterpret_cast<Sprite *>(data.get()); }
diff --git a/src/spritecache.cpp b/src/spritecache.cpp
index 64effb953a..3ffff15e01 100644
--- a/src/spritecache.cpp
+++ b/src/spritecache.cpp
@@ -899,7 +899,7 @@ void *CacheSpriteAllocator::AllocatePtr(size_t mem_req)
 
 void *UniquePtrSpriteAllocator::AllocatePtr(size_t size)
 {
-	this->data = std::make_unique<uint8_t[]>(size);
+	this->data = std::make_unique<std::byte[]>(size);
 	return this->data.get();
 }
 
diff --git a/src/spritecache.h b/src/spritecache.h
index 09fee98a92..54ab1f3dc9 100644
--- a/src/spritecache.h
+++ b/src/spritecache.h
@@ -34,7 +34,7 @@ extern uint _sprite_cache_size;
 /** SpriteAllocator that allocates memory via a unique_ptr array. */
 class UniquePtrSpriteAllocator : public SpriteAllocator {
 public:
-	std::unique_ptr<uint8_t[]> data;
+	std::unique_ptr<std::byte[]> data;
 protected:
 	void *AllocatePtr(size_t size) override;
 };