diff --git a/res/content/base/generators/demo.files/structures.json b/res/content/base/generators/demo.files/structures.json
deleted file mode 100644
index 18f22b26..00000000
--- a/res/content/base/generators/demo.files/structures.json
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-    "tree0": {},
-    "tree1": {},
-    "tree2": {},
-    "tower": {},
-    "coal_ore0": {}
-}
diff --git a/res/content/base/generators/demo.files/structures.toml b/res/content/base/generators/demo.files/structures.toml
new file mode 100644
index 00000000..3dcf3cda
--- /dev/null
+++ b/res/content/base/generators/demo.files/structures.toml
@@ -0,0 +1,5 @@
+tree0 = {}
+tree1 = {}
+tree2 = {}
+tower = {}
+coal_ore0 = {}
diff --git a/src/content/loading/GeneratorLoader.cpp b/src/content/loading/GeneratorLoader.cpp
index ec8315f5..fcbcebc5 100644
--- a/src/content/loading/GeneratorLoader.cpp
+++ b/src/content/loading/GeneratorLoader.cpp
@@ -133,7 +133,7 @@ static std::vector<std::unique_ptr<VoxelStructure>> load_structures(
     const fs::path& structuresFile
 ) {
     auto structuresDir = structuresFile.parent_path() / fs::path("fragments");
-    auto map = files::read_json(structuresFile);
+    auto map = files::read_object(structuresFile);
 
     std::vector<std::unique_ptr<VoxelStructure>> structures;
     for (auto& [name, config] : map.asObject()) {
@@ -171,7 +171,7 @@ static void load_structures(GeneratorDef& def, const fs::path& structuresFile) {
     }
 }
 
-static inline const auto STRUCTURES_FILE = fs::u8path("structures.json");
+static inline const auto STRUCTURES_FILE = fs::u8path("structures.toml");
 static inline const auto BIOMES_FILE = fs::u8path("biomes.toml");
 static inline const auto GENERATORS_DIR = fs::u8path("generators");