diff --git a/src/DotNetOpenAuth/OpenId/DiffieHellmanUtilities.cs b/src/DotNetOpenAuth/OpenId/DiffieHellmanUtilities.cs
index a93c8242dd..2507f38e80 100644
--- a/src/DotNetOpenAuth/OpenId/DiffieHellmanUtilities.cs
+++ b/src/DotNetOpenAuth/OpenId/DiffieHellmanUtilities.cs
@@ -21,12 +21,12 @@ internal class DiffieHellmanUtilities {
 		/// <summary>
 		/// An array of known Diffie Hellman sessions, sorted by decreasing hash size.
 		/// </summary>
-		private static DHSha[] diffieHellmanSessionTypes = {
+		private static DHSha[] diffieHellmanSessionTypes = new List<DHSha> {
 			new DHSha(new SHA512Managed(), protocol => protocol.Args.SessionType.DH_SHA512),
 			new DHSha(new SHA384Managed(), protocol => protocol.Args.SessionType.DH_SHA384),
 			new DHSha(new SHA256Managed(), protocol => protocol.Args.SessionType.DH_SHA256),
 			new DHSha(new SHA1Managed(), protocol => protocol.Args.SessionType.DH_SHA1),
-		};
+		}.ToArray();
 
 		/// <summary>
 		/// Finds the hashing algorithm to use given an openid.session_type value.
diff --git a/src/DotNetOpenAuth/OpenId/HmacShaAssociation.cs b/src/DotNetOpenAuth/OpenId/HmacShaAssociation.cs
index 16d8f7481a..ca46b5b888 100644
--- a/src/DotNetOpenAuth/OpenId/HmacShaAssociation.cs
+++ b/src/DotNetOpenAuth/OpenId/HmacShaAssociation.cs
@@ -29,7 +29,7 @@ internal class HmacShaAssociation : Association {
 		/// <summary>
 		/// A list of HMAC-SHA algorithms in order of decreasing bit lengths.
 		/// </summary>
-		private static HmacSha[] hmacShaAssociationTypes = {
+		private static HmacSha[] hmacShaAssociationTypes = new List<HmacSha> {
 			new HmacSha {
 				CreateHasher = secretKey => new HMACSHA512(secretKey),
 				GetAssociationType = protocol => protocol.Args.SignatureAlgorithm.HMAC_SHA512,
@@ -50,7 +50,7 @@ internal class HmacShaAssociation : Association {
 				GetAssociationType = protocol => protocol.Args.SignatureAlgorithm.HMAC_SHA1,
 				BaseHashAlgorithm = new SHA1Managed(),
 			},
-		};
+		}.ToArray();
 
 		/// <summary>
 		/// The specific variety of HMAC-SHA this association is based on (whether it be HMAC-SHA1, HMAC-SHA256, etc.)