diff --git a/portlist/portlist.go b/portlist/portlist.go
index 81c1664a7..9f7af40d0 100644
--- a/portlist/portlist.go
+++ b/portlist/portlist.go
@@ -17,8 +17,8 @@
 type Port struct {
 	Proto   string // "tcp" or "udp"
 	Port    uint16 // port number
-	Process string // optional process name, if found
-	Pid     int    // process id, if known
+	Process string // optional process name, if found (requires suitable permissions)
+	Pid     int    // process ID, if known (requires suitable permissions)
 }
 
 // List is a list of Ports.
diff --git a/portlist/portlist_linux.go b/portlist/portlist_linux.go
index eb1e53f9e..68b8ed7ba 100644
--- a/portlist/portlist_linux.go
+++ b/portlist/portlist_linux.go
@@ -322,6 +322,8 @@ func (li *linuxImpl) findProcessNames(need map[string]*portMeta) error {
 				pe.pid = int(p)
 			}
 			pe.port.Process = argvSubject(argv...)
+			pid64, _ := mem.ParseInt(pid, 10, 0)
+			pe.port.Pid = int(pid64)
 			pe.needsProcName = false
 			delete(need, string(targetBuf[:n]))
 			if len(need) == 0 {