diff --git a/plugins/signal-protocol/tests/testcase.vala b/plugins/signal-protocol/tests/testcase.vala
index e56bafa8..061ccc63 100644
--- a/plugins/signal-protocol/tests/testcase.vala
+++ b/plugins/signal-protocol/tests/testcase.vala
@@ -27,7 +27,7 @@ public abstract class Gee.TestCase : Object {
 
     public delegate void TestMethod ();
 
-    public TestCase (string name) {
+    protected TestCase (string name) {
         this.suite = new GLib.TestSuite (name);
     }
 
diff --git a/xmpp-vala/tests/testcase.vala b/xmpp-vala/tests/testcase.vala
index dd1fdefd..cff0c47e 100644
--- a/xmpp-vala/tests/testcase.vala
+++ b/xmpp-vala/tests/testcase.vala
@@ -27,7 +27,7 @@ public abstract class Gee.TestCase : Object {
 
     public delegate void TestMethod ();
 
-    public TestCase (string name) {
+    protected TestCase (string name) {
         this.suite = new GLib.TestSuite (name);
     }