diff --git a/source/blender/blenkernel/BKE_bake_items_serialize.hh b/source/blender/blenkernel/BKE_bake_items_serialize.hh
index bf15dc7a57b..48dc975c443 100644
--- a/source/blender/blenkernel/BKE_bake_items_serialize.hh
+++ b/source/blender/blenkernel/BKE_bake_items_serialize.hh
@@ -136,20 +136,6 @@ class DiskBDataWriter : public BDataWriter {
   BDataSlice write(const void *data, int64_t size) override;
 };
 
-/**
- * Writes the bake item into `r_io_item`.
- */
-void serialize_bake_item(const BakeItem &item,
-                         BDataWriter &bdata_writer,
-                         BDataSharing &bdata_sharing,
-                         io::serialize::DictionaryValue &r_io_item);
-/**
- * Creates a bake item from `io_item`.
- */
-std::unique_ptr<BakeItem> deserialize_bake_item(const io::serialize::DictionaryValue &io_item,
-                                                const BDataReader &bdata_reader,
-                                                const BDataSharing &bdata_sharing);
-
 void serialize_bake(const BakeState &bake_state,
                     BDataWriter &bdata_writer,
                     BDataSharing &bdata_sharing,
diff --git a/source/blender/blenkernel/intern/bake_items_serialize.cc b/source/blender/blenkernel/intern/bake_items_serialize.cc
index e8b17351f74..85984fc4005 100644
--- a/source/blender/blenkernel/intern/bake_items_serialize.cc
+++ b/source/blender/blenkernel/intern/bake_items_serialize.cc
@@ -960,10 +960,10 @@ template<typename T>
   return false;
 }
 
-void serialize_bake_item(const BakeItem &item,
-                         BDataWriter &bdata_writer,
-                         BDataSharing &bdata_sharing,
-                         DictionaryValue &r_io_item)
+static void serialize_bake_item(const BakeItem &item,
+                                BDataWriter &bdata_writer,
+                                BDataSharing &bdata_sharing,
+                                DictionaryValue &r_io_item)
 {
   if (const auto *geometry_state_item = dynamic_cast<const GeometryBakeItem *>(&item)) {
     r_io_item.append_str("type", "GEOMETRY");
@@ -996,9 +996,9 @@ void serialize_bake_item(const BakeItem &item,
   }
 }
 
-std::unique_ptr<BakeItem> deserialize_bake_item(const DictionaryValue &io_item,
-                                                const BDataReader &bdata_reader,
-                                                const BDataSharing &bdata_sharing)
+static std::unique_ptr<BakeItem> deserialize_bake_item(const DictionaryValue &io_item,
+                                                       const BDataReader &bdata_reader,
+                                                       const BDataSharing &bdata_sharing)
 {
 
   const std::optional<StringRefNull> state_item_type = io_item.lookup_str("type");