diff --git a/KS.Fiks.Maskinporten.Client.Tests/TestHelper.cs b/KS.Fiks.Maskinporten.Client.Tests/TestHelper.cs
index 33bb1f3..a595a1a 100644
--- a/KS.Fiks.Maskinporten.Client.Tests/TestHelper.cs
+++ b/KS.Fiks.Maskinporten.Client.Tests/TestHelper.cs
@@ -35,12 +35,14 @@ public static Dictionary<string, string> RequestContentAsDictionary(HttpRequestM
         public static X509Certificate2 Certificate =>
             new X509Certificate2(
                 "alice-virksomhetssertifikat.p12",
-                "PASSWORD");
+                "PASSWORD",
+                X509KeyStorageFlags.EphemeralKeySet);
 
         public static X509Certificate2 CertificateOtherThanUsedForDecode =>
             new X509Certificate2(
                 "bob-virksomhetssertifikat.p12",
-                "PASSWORD");
+                "PASSWORD",
+                X509KeyStorageFlags.EphemeralKeySet);
 
         public static RSA PublicKey => _publicKey;