diff --git a/Source/_Tests/AudibleUtilities.Tests/AccountTests.cs b/Source/_Tests/AudibleUtilities.Tests/AccountTests.cs
index 03309832..f45a850f 100644
--- a/Source/_Tests/AudibleUtilities.Tests/AccountTests.cs
+++ b/Source/_Tests/AudibleUtilities.Tests/AccountTests.cs
@@ -528,7 +528,7 @@ namespace AccountsTests
             var a2 = new Account("a") { AccountName = "two", IdentityTokens = idIn };
 
             // violation: validate()
-            Assert.ThrowsException<InvalidOperationException>(() => accountsSettings.Add(a2));
+            Assert.ThrowsExactly<InvalidOperationException>(() => accountsSettings.Add(a2));
         }
 
         [TestMethod]
@@ -545,7 +545,7 @@ namespace AccountsTests
             accountsSettings.Add(a2);
 
             // violation: GetAccount.SingleOrDefault
-            Assert.ThrowsException<InvalidOperationException>(() => a2.IdentityTokens = idIn);
+            Assert.ThrowsExactly<InvalidOperationException>(() => a2.IdentityTokens = idIn);
         }
     }
 
diff --git a/Source/_Tests/FileManager.Tests/FileUtilityTests.cs b/Source/_Tests/FileManager.Tests/FileUtilityTests.cs
index ff0e9f58..0b3dcafc 100644
--- a/Source/_Tests/FileManager.Tests/FileUtilityTests.cs
+++ b/Source/_Tests/FileManager.Tests/FileUtilityTests.cs
@@ -17,7 +17,7 @@ namespace FileUtilityTests
 		static readonly ReplacementCharacters Barebones = ReplacementCharacters.Barebones(Environment.OSVersion.Platform == PlatformID.Win32NT);
 
 		[TestMethod]
-		public void null_path_throws() => Assert.ThrowsException<ArgumentNullException>(() => FileUtility.GetSafePath(null, Default));
+		public void null_path_throws() => Assert.ThrowsExactly<ArgumentNullException>(() => FileUtility.GetSafePath(null, Default));
 
 		[TestMethod]
 		// non-empty replacement
@@ -137,25 +137,25 @@ namespace FileUtilityTests
 	public class GetSequenceFormatted
 	{
 		[TestMethod]
-		public void negative_partsPosition() => Assert.ThrowsException<ArgumentException>(()
+		public void negative_partsPosition() => Assert.ThrowsExactly<ArgumentException>(()
 			=> FileUtility.GetSequenceFormatted(-1, 2)
 		);
 		[TestMethod]
-		public void zero_partsPosition() => Assert.ThrowsException<ArgumentException>(()
+		public void zero_partsPosition() => Assert.ThrowsExactly<ArgumentException>(()
 			=> FileUtility.GetSequenceFormatted(0, 2)
 		);
 
 		[TestMethod]
-		public void negative_partsTotal() => Assert.ThrowsException<ArgumentException>(()
+		public void negative_partsTotal() => Assert.ThrowsExactly<ArgumentException>(()
 			=> FileUtility.GetSequenceFormatted(2, -1)
 		);
 		[TestMethod]
-		public void zero_partsTotal() => Assert.ThrowsException<ArgumentException>(()
+		public void zero_partsTotal() => Assert.ThrowsExactly<ArgumentException>(()
 			=> FileUtility.GetSequenceFormatted(2, 0)
 		);
 
 		[TestMethod]
-		public void partsPosition_greater_than_partsTotal() => Assert.ThrowsException<ArgumentException>(()
+		public void partsPosition_greater_than_partsTotal() => Assert.ThrowsExactly<ArgumentException>(()
 			=> FileUtility.GetSequenceFormatted(2, 1)
 		);