diff --git a/api/wingui/cli.go b/api/wingui/cli.go
index 93c0810..f6239cc 100644
--- a/api/wingui/cli.go
+++ b/api/wingui/cli.go
@@ -532,7 +532,7 @@ func (c *Cli) ProcName(pid int) (ret string, err error) {
 }
 
 func (c *Cli) ProcPath(pid int) (ret string, err error) {
-	err = c.HttpCli().JsonGet(fmt.Sprintf("/ipc/wingui/proc/path?cmd=%d", pid), &ret)
+	err = c.HttpCli().JsonGet(fmt.Sprintf("/ipc/wingui/proc/path?pid=%d", pid), &ret)
 	return ret, err
 }