diff --git a/main.go b/main.go
index 4abafb4..7b1e7fa 100644
--- a/main.go
+++ b/main.go
@@ -35,6 +35,7 @@ import (
 var (
 	initServiceNameArg string
 	invocationArgs     []string
+	sshControlToken    string
 )
 
 func main() {
@@ -320,6 +321,7 @@ func init() {
 	rand.Seed(time.Now().UnixNano())
 	log.SetFlags(0)
 	log.SetPrefix("")
+	sshControlToken = fmt.Sprintf("%d-%d", os.Getpid(), time.Now().UnixNano())
 }
 
 func writePBConfig(path, serviceName string) error {
@@ -1935,7 +1937,7 @@ func sshSharedArgs(server string) []string {
 }
 
 func sshControlPath(server string) string {
-	sum := sha1.Sum([]byte(server))
+	sum := sha1.Sum([]byte(fmt.Sprintf("%s-%s", server, sshControlToken)))
 	return filepath.Join(sshControlDir(), fmt.Sprintf("pb-ssh-%x.sock", sum))
 }