diff --git a/wireguard-control/src/backends/userspace.rs b/wireguard-control/src/backends/userspace.rs
index 2a8a648..befde96 100644
--- a/wireguard-control/src/backends/userspace.rs
+++ b/wireguard-control/src/backends/userspace.rs
@@ -273,19 +273,31 @@ fn get_userspace_implementation() -> String {
 }
 
 fn start_userspace_wireguard(iface: &InterfaceName) -> io::Result<Output> {
-    let mut command = Command::new(get_userspace_implementation());
-    let output = if cfg!(target_os = "linux") {
-        command.args(&[iface.to_string()]).output()?
+    let userspace_implementation = get_userspace_implementation();
+    let mut command = Command::new(&userspace_implementation);
+
+    let output_res = if cfg!(target_os = "linux") {
+        command.args(&[iface.to_string()]).output()
     } else {
         command
             .env("WG_TUN_NAME_FILE", &format!("{VAR_RUN_PATH}/{iface}.name"))
             .args(["utun"])
-            .output()?
+            .output()
     };
-    if !output.status.success() {
-        Err(io::ErrorKind::AddrNotAvailable.into())
-    } else {
-        Ok(output)
+
+    match output_res {
+        Ok(output) => {
+            if output.status.success() {
+                Ok(output)
+            } else {
+                Err(io::ErrorKind::AddrNotAvailable.into())
+            }
+        },
+        Err(e) if e.kind() == io::ErrorKind::NotFound => Err(io::Error::new(
+            io::ErrorKind::NotFound,
+            format!("Cannot find \"{userspace_implementation}\". Specify a custom path with WG_USERSPACE_IMPLEMENTATION."),
+        )),
+        Err(e) => Err(e),
     }
 }