diff --git a/ci/test.mk b/ci/test.mk
index cebada778e4ac37cb5ad1aa0988da77af80abeb6..a249ea4534c54d11479c21704100aa362baf48e0 100644
--- a/ci/test.mk
+++ b/ci/test.mk
@@ -11,7 +11,7 @@ coveralls: gotest
 	goveralls -coverprofile=ci/out/coverage.prof -service=github-actions
 
 gotest:
-	go test -parallel=32 -covermode=count -coverprofile=ci/out/coverage.prof -coverpkg=./... $${TESTFLAGS-} ./...
+	go test -covermode=count -coverprofile=ci/out/coverage.prof -coverpkg=./... $${GOTESTFLAGS-} ./...
 	sed -i '/_stringer\.go/d' ci/out/coverage.prof
 	sed -i '/wsecho\.go/d' ci/out/coverage.prof
 	sed -i '/assert\.go/d' ci/out/coverage.prof
diff --git a/conn_test.go b/conn_test.go
index 4c7d139021651b0fcfc7267e1f66ed5eded06e97..d924fd0aaf3c4ee68c5b3a9dc2eca744fd270a75 100644
--- a/conn_test.go
+++ b/conn_test.go
@@ -1023,14 +1023,7 @@ func TestAutobahn(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			t.Parallel()
 
-			t.Run("server", func(t *testing.T) {
-				t.Parallel()
-				run2(t, false)
-			})
-			t.Run("client", func(t *testing.T) {
-				t.Parallel()
-				run2(t, true)
-			})
+			run2(t, true)
 		})
 	}