diff --git a/.gitignore b/.gitignore
index aa42c1f..81f521a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,5 @@ Cargo.lock
 .DS_Store
 
 .vscode
+
+.idea
diff --git a/src/abi_transferable.rs b/src/abi_transferable.rs
index 29aa80d..86801b5 100644
--- a/src/abi_transferable.rs
+++ b/src/abi_transferable.rs
@@ -77,6 +77,7 @@ primitive_transferable_type! {
     u64,
     f32,
     f64,
+    usize,
     crate::sys::GUID
 }