diff --git a/pkg/kanx/client.go b/pkg/kanx/client.go
index 2de1d851947..80f996aaf89 100644
--- a/pkg/kanx/client.go
+++ b/pkg/kanx/client.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"io"
 	"net"
+	"net/url"
 
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
@@ -16,6 +17,11 @@ func newGRPCConnection(addr string) (*grpc.ClientConn, error) {
 	var opts []grpc.DialOption
 	opts = append(opts, grpc.WithTransportCredentials(insecure.NewCredentials()))
 	opts = append(opts, grpc.WithContextDialer(unixDialer))
+	// Add passthrough scheme if there is no scheme defined in the address
+	u, err := url.Parse(addr)
+	if err == nil && u.Scheme == "" {
+		addr = "passthrough:///" + addr
+	}
 	return grpc.NewClient(addr, opts...)
 }
 
diff --git a/pkg/kanx/kanx_test.go b/pkg/kanx/kanx_test.go
index 97b7289ece4..b4b9b654785 100644
--- a/pkg/kanx/kanx_test.go
+++ b/pkg/kanx/kanx_test.go
@@ -40,16 +40,18 @@ func newTestServer(dir string) *Server {
 	}
 }
 
-func serverReady(ctx context.Context, addr string) {
+func serverReady(ctx context.Context, addr string, c *C) {
 	ctx, can := context.WithTimeout(ctx, 10*time.Second)
 	defer can()
 	for {
 		select {
 		case <-ctx.Done():
+			c.Error("Timeout waiting for server to be ready")
+			c.Fail()
 			return
 		default:
 		}
-		_, err := ListProcesses(ctx, addr)
+		l, err := ListProcesses(ctx, addr)
 		if err == nil {
 			return
 		}
@@ -61,7 +63,7 @@ func (s *KanXSuite) TestServerCancellation(c *C) {
 	addr := path.Join(d, "kanx.sock")
 	ctx, can := context.WithCancel(context.Background())
 	go func() {
-		serverReady(ctx, addr)
+		serverReady(ctx, addr, c)
 		can()
 	}()
 	err := newTestServer(d).Serve(ctx, addr)
@@ -77,7 +79,7 @@ func (s *KanXSuite) TestShortProcess(c *C) {
 		err := newTestServer(d).Serve(ctx, addr)
 		c.Assert(err, IsNil)
 	}()
-	serverReady(ctx, addr)
+	serverReady(ctx, addr, c)
 
 	p, err := CreateProcess(ctx, addr, "echo", []string{"hello"})
 	c.Assert(err, IsNil)
@@ -115,7 +117,7 @@ func (s *KanXSuite) TestLongProcess(c *C) {
 		err := server.Serve(ctx, addr)
 		c.Assert(err, IsNil)
 	}()
-	serverReady(ctx, addr)
+	serverReady(ctx, addr, c)
 
 	p, err := CreateProcess(ctx, addr, "tail", []string{"-f", "/dev/null"})
 	c.Assert(err, IsNil)
@@ -168,7 +170,7 @@ func (s *KanXSuite) TestError(c *C) {
 		err := server.Serve(ctx, addr)
 		c.Assert(err, IsNil)
 	}()
-	serverReady(ctx, addr)
+	serverReady(ctx, addr, c)
 
 	p, err := CreateProcess(ctx, addr, "tail", []string{"-f", "/dev/null"})
 	c.Assert(err, IsNil)
@@ -225,7 +227,7 @@ func (s *KanXSuite) TestParallelStdout(c *C) {
 		err := server.Serve(ctx, addr)
 		c.Assert(err, IsNil)
 	}()
-	serverReady(ctx, addr)
+	serverReady(ctx, addr, c)
 
 	p, err := CreateProcess(ctx, addr, "yes", nil)
 	c.Assert(err, IsNil)