diff --git a/src/typescript.rs b/src/typescript.rs
index c4ebf38..427f645 100644
--- a/src/typescript.rs
+++ b/src/typescript.rs
@@ -77,6 +77,18 @@ fn try_match_with_args(ident: &str, args: &syn::PathArguments) -> Result<TsType,
                 _ => "unknown".to_owned(),
             },
         }),
+        "Box" => Ok(TsType {
+            is_optional: false,
+            ts_type: match &args {
+                syn::PathArguments::Parenthesized(parenthesized_argument) => {
+                    format!("{:?}", parenthesized_argument)
+                }
+                syn::PathArguments::AngleBracketed(angle_bracketed_argument) => {
+                    convert_generic(angle_bracketed_argument.args.first().unwrap()).ts_type
+                }
+                _ => "unknown".to_owned(),
+            },
+        }),
         "Vec" => Ok(match &args {
             syn::PathArguments::Parenthesized(parenthesized_argument) => {
                 format!("{:?}", parenthesized_argument).into()
@@ -196,6 +208,7 @@ pub fn convert_type(ty: &syn::Type) -> TsType {
                 is_optional: false,
             }
         }
+
         _ => "unknown".to_owned().into(),
     }
 }
diff --git a/test/issue-63/rust.rs b/test/issue-63/rust.rs
new file mode 100644
index 0000000..5f3b5dd
--- /dev/null
+++ b/test/issue-63/rust.rs
@@ -0,0 +1,13 @@
+#[tsync]
+struct TestStruct {
+    size: Box<i32>,
+}
+
+#[tsync]
+const v: Box<i32> = 23;
+
+#[tsync]
+struct TestStruct2 {
+    inner: Box<TestStruct>,
+    inner_unboxed: TestStruct,
+}
diff --git a/test/issue-63/tsync.sh b/test/issue-63/tsync.sh
new file mode 100755
index 0000000..1764bd6
--- /dev/null
+++ b/test/issue-63/tsync.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
+
+cd $SCRIPT_DIR
+
+cargo run -- -i rust.rs -o typescript.d.ts
+cargo run -- -i rust.rs -o typescript.ts
\ No newline at end of file
diff --git a/test/issue-63/typescript.d.ts b/test/issue-63/typescript.d.ts
new file mode 100644
index 0000000..b85dfdd
--- /dev/null
+++ b/test/issue-63/typescript.d.ts
@@ -0,0 +1,10 @@
+/* This file is generated and managed by tsync */
+
+interface TestStruct {
+  size: number;
+}
+
+interface TestStruct2 {
+  inner: TestStruct;
+  inner_unboxed: TestStruct;
+}
diff --git a/test/issue-63/typescript.ts b/test/issue-63/typescript.ts
new file mode 100644
index 0000000..75f58e1
--- /dev/null
+++ b/test/issue-63/typescript.ts
@@ -0,0 +1,12 @@
+/* This file is generated and managed by tsync */
+
+export interface TestStruct {
+  size: number;
+}
+
+export const v = 23;
+
+export interface TestStruct2 {
+  inner: TestStruct;
+  inner_unboxed: TestStruct;
+}
diff --git a/test/test_all.sh b/test/test_all.sh
index fa9feb8..ab4571b 100755
--- a/test/test_all.sh
+++ b/test/test_all.sh
@@ -17,5 +17,6 @@ cd $SCRIPT_DIR
 ./issue-43/tsync.sh
 ./issue-55/tsync.sh
 ./issue-58/tsync.sh
+./issue-63/tsync.sh
 ./issue-65-untagged-enums/tsync.sh
 ./raw_identifiers/tsync.sh