diff --git a/listener/listener.go b/listener/listener.go
index b3ecda6..7da9dd6 100644
--- a/listener/listener.go
+++ b/listener/listener.go
@@ -83,7 +83,7 @@ func (l UnixListener) Listen() (net.Listener, error) {
 }
 
 // Being lazy here...
-var reLooksLikeHostPort = regexp.MustCompile(`^(\d+):(\d+)$`)
+var reLooksLikeHostPort = regexp.MustCompile(`^(.+?):(\d+)$`)
 var reLooksLikePort = regexp.MustCompile(`^\d+$`)
 
 func parseListenTargets(str string) ([]Listener, error) {
@@ -103,14 +103,14 @@ func parseListenTargets(str string) ([]Listener, error) {
 			return nil, fmt.Errorf("failed to parse '%s' as listen target: %s", pairString, err)
 		}
 
-		if matches := reLooksLikeHostPort.FindAllString(hostPort, -1); matches != nil {
-			port, err := strconv.ParseInt(matches[1], 10, 0)
+		if matches := reLooksLikeHostPort.FindStringSubmatch(hostPort); matches != nil {
+			port, err := strconv.ParseInt(matches[2], 10, 0)
 			if err != nil {
 				return nil, err
 			}
 
 			ret[i] = TCPListener{
-				Addr: matches[0],
+				Addr: matches[1],
 				Port: int(port),
 				fd:   uintptr(fd),
 			}
diff --git a/listener/listener_test.go b/listener/listener_test.go
index 3232a4e..f3ee8a3 100644
--- a/listener/listener_test.go
+++ b/listener/listener_test.go
@@ -22,6 +22,11 @@ func TestPort(t *testing.T) {
 		if port.Fd() != expect[i].Fd() {
 			t.Errorf("parsed fd is not what we expected (expected %d, got %d)", expect[i].Fd(), port.Fd())
 		}
+		_, gotTcp := port.(TCPListener)
+		_, expectTcp := expect[i].(TCPListener)
+		if gotTcp != expectTcp {
+			t.Errorf("parsed listener is the wrong type")
+		}
 	}
 }