diff --git a/daemon/2server.go b/daemon/2server.go
index dd54b4d..042e1e4 100644
--- a/daemon/2server.go
+++ b/daemon/2server.go
@@ -99,7 +99,7 @@ func handleConn(conn net.Conn) {
 
 // pidToPath returns the path of the executable that has the given PID.
 func pidToPath(pid int) string {
-	path, _ := os.Readlink(fmt.Sprintf("/proc/%d/exe", pid))
+	path, _ := os.Readlink(fmt.Sprintf("/proc/%d/"+pidPathFile, pid))
 	return path
 }
 
diff --git a/daemon/2serverFreeBSD.go b/daemon/2serverFreeBSD.go
new file mode 100644
index 0000000..0094621
--- /dev/null
+++ b/daemon/2serverFreeBSD.go
@@ -0,0 +1,5 @@
+//go:build freebsd
+
+package daemon
+
+const pidPathFile = "file"
diff --git a/daemon/2serverLinux.go b/daemon/2serverLinux.go
new file mode 100644
index 0000000..718d068
--- /dev/null
+++ b/daemon/2serverLinux.go
@@ -0,0 +1,5 @@
+//go:build linux
+
+package daemon
+
+const pidPathFile = "exe"