diff --git a/Cargo.lock b/Cargo.lock
index 1ae01cd4f6ca2172ae2b0795477bea8ce03b39ec..41a6d11b727f9c0c82386a0d590558178498cd87 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -351,6 +351,7 @@ dependencies = [
  "redox_syscall 0.3.2",
  "sc",
  "spin 0.9.4",
+ "unicode-width",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 3f163c02a2d49d1f3540be18a81d61991a503929..f4e172353c83c3b90bb483b7570e8ca44283b0e6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,6 +25,7 @@ posix-regex = { path = "posix-regex", features = ["no_std"] }
 rand = { version = "0.5.5", default-features = false }
 memchr = { version = "2.2.0", default-features = false }
 plain = "0.2"
+unicode-width = "0.1"
 
 [dependencies.goblin]
 version = "0.0.21"
diff --git a/src/header/wchar/mod.rs b/src/header/wchar/mod.rs
index cde6a5e85bbaccabe79fd808e5b5e7828bbc8f3a..93096dad9ab31b53ff26b7b4b1664d83cfc6024e 100644
--- a/src/header/wchar/mod.rs
+++ b/src/header/wchar/mod.rs
@@ -656,9 +656,15 @@ pub extern "C" fn wctob(c: wint_t) -> c_int {
     }
 }
 
-// #[no_mangle]
+#[no_mangle]
 pub extern "C" fn wcwidth(wc: wchar_t) -> c_int {
-    unimplemented!();
+    match char::from_u32(wc as u32) {
+        Some(c) => match unicode_width::UnicodeWidthChar::width(c) {
+            Some(width) => width as c_int,
+            None => -1,
+        },
+        None => -1,
+    }
 }
 
 #[no_mangle]