diff --git a/src/core.rs b/src/core/mod.rs
similarity index 100%
rename from src/core.rs
rename to src/core/mod.rs
diff --git a/src/gfx.rs b/src/gfx/mod.rs
similarity index 100%
rename from src/gfx.rs
rename to src/gfx/mod.rs
diff --git a/src/voxel.rs b/src/voxel/mod.rs
similarity index 100%
rename from src/voxel.rs
rename to src/voxel/mod.rs