diff --git a/src/SOS/SOS.UnitTests/SOSRunner.cs b/src/SOS/SOS.UnitTests/SOSRunner.cs
index 9f3aee8dcb..5511fe2ed6 100644
--- a/src/SOS/SOS.UnitTests/SOSRunner.cs
+++ b/src/SOS/SOS.UnitTests/SOSRunner.cs
@@ -320,7 +320,6 @@ public static async Task<string> CreateDump(TestInformation information)
                 ProcessRunner processRunner = new ProcessRunner(exePath, ReplaceVariables(variables, arguments.ToString())).
                     WithEnvironmentVariable("DOTNET_MULTILEVEL_LOOKUP", "0").
                     WithEnvironmentVariable("DOTNET_ROOT", config.DotNetRoot).
-                    WithEnvironmentVariable("DOTNET_LegacyExceptionHandling", "1").
                     WithRuntimeConfiguration("DbgEnableElfDumpOnMacOS", "1").
                     WithLog(new TestRunner.TestLogger(outputHelper.IndentedOutput)).
                     WithTimeout(TimeSpan.FromMinutes(10));
@@ -680,7 +679,6 @@ public static async Task<SOSRunner> StartDebugger(TestInformation information, D
             ProcessRunner processRunner = new ProcessRunner(debuggerPath, ReplaceVariables(variables, arguments.ToString())).
                 WithEnvironmentVariable("DOTNET_MULTILEVEL_LOOKUP", "0").
                 WithEnvironmentVariable("DOTNET_ROOT", config.DotNetRoot).
-                WithEnvironmentVariable("DOTNET_LegacyExceptionHandling", "1").
                 WithLog(scriptLogger).
                 WithTimeout(TimeSpan.FromMinutes(10));